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    Last updated: 12.05.2015

 

 

                                   BIBLIOGRAPHIC CITATIONS OF C. L. BEJAN’S PAPERS LISTED ABOVE

                                                                                    - partial list -

 

 

CITATIONS IN BOOKS

 

1.    P. Gilkey, J. Leahy, J. Park
      ”Spectral Geometry, Riemannian Submersions and the Gromov – Lawson
       Conjecture”
      Studies in Advanced Mathematics CRC Press LLC, USA (1999)
      Cites the papers:

                        ·     Quasi- harmonic maps between almost symplectic manifolds [28]
                        ·     Harmonic maps and morphisms from the tangent bundle [29]
                        ·     Quasi – harmonicity for semi – Riemannian manifolds [25]

 

2.   P. Baird, J. Wood
      ”Harmonic Morphisms”
      Oxford University Press (2002)
      Cites the papers:

                        ·     Harmonic maps and morphisms from the tangent bundle [29]
                        ·     On harmonic maps between Semi – Riemannian manifolds [12]
                        ·     Harmonic maps between almost hyperbolic Hemitian manifolds [23]

 

3.   S. Dragomir, L. Ornea
      “Locally conformal Kähler Geometry”
      Birkhauser (1998), vol. 155
      Cites the paper:

                        ·     Subvarietăţi generice în varietăţi aproape anti – quanternionice [11]

 

4.    Brozos-Vázquez, Miguel; Gilkey, Peter B.; Nikcevic, Stana
     „Geometric realizations of curvature”
       ICP Advanced Texts in Mathematics vol. 6, (2012)
     Hackensack, NJ: World Scientific, 252 p.
      Cites the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]
                       

 

5.  Druggal, K.L.; Sahin, B.
     “Differential geometry of lightlike submanifolds”.
     Birkhauser (2010)
     Cites the papers:

                        ·     2 – codimensional lightlike submanifolds of almost para - Hermitian
                             manifolds [22]
                       

 

6.  Tekkoyun, Mehmet
     “Mechanical systems on manifolds”.
     Geometry Balkan Press, vol. 11, (2014)
     Cites the papers:

                        ·     Para-Kähler manifolds of quasi – constant P-sectional curvature [39]

 

 

CITATIONS IN PAPERS

 

[Ada95]   Adams, D.R. and Nussenzveig Lopes, H.J
                 “Weakly elliptic systems of variational inequalities: a 2×2 model problem with   
                 obstacles in both components,”
                 Annali di Mat. Pura ed Appl., 169 (1995), 183–201.
                 Cites the paper:

                        ·   On harmonic maps between semi – Riemannian manifolds  [12]

 

 

[Agu99]     Agut, C.     
                    “On a class of QR – submanifolds of quaternion space forms”
                   Publ. Math. Debrecen, 54 (1999), fasc. 3 – 4, 451 - 456
                   Cites the paper:

                        ·   On QR  – submanifolds of a quanternionic Kählerian manifold [10]

 

[Agu02]     Agut, C.     
                  “Subvarietăţi ale unor varietăţi dotate cu structuri geometrice”
                  Teză de doctorat, Univ. “Al. I. Cuza” Iaşi, 2002
                  Cites the paper:

                        ·   On QR  – submanifolds of a quanternionic Kählerian manifold [10]

 

[AlA01]      Al-Aqeel, A. and Bejancu, A.,
                   “On the geometry of paracomplex submanifolds,”
                    Demonstratio Math., 34 (2001), No. 4, 919–932.
                    Cites the paper:

                        ·     2 – codimensional lightlike submanifolds of almost para – Hermitian   
                             manifolds [22]

 

[Ale09]     Alekseevskii D. V.; Medori K.; Tomassini A.
                 “Homogeneous para-Kählerian Einstein manifolds” (Russian)
                 Uspekhi Mat. Nauk 64 (2009), no. 1(385), 3--50; translation in
                 Russian    Math. Surveys 64 (2009), no. 1, 1–43       
                (MR2503094 (2010k:53068)
                Cites the paper:

                        ·     Harmonic maps between almost para – Hermitian manifolds [26]

 

[Ale11]      Alegre, P.
                   “Semi-invariant submanifolds of Lorentzian sasakian manifolds”

                   Demonstratio Matematicae XLIV, no. 2, (2011), 391-406.
                    Cites the paper:

                        ·    Almost semi-invariant submanifolds of a cosymplectic manifold [7]   

 

[Ata08]   Ata, E, Yaylı, Y
                 “A global condition for the triviality of an almost split quaternionic structure on   
                 split complex manifolds.”
                 Int. J. Math. Sci. (WASET) 2, no. 3,  (2008),  47-51.
                 Cites the paper:

                        ·   Some examples of manifolds with hyperbolic structures [21]

 

 

[Atc07]      Atçeken, Mehmet; Kiliç, Erol
                 “Semi-invariant lightlike submanifolds of a semi-Riemannian product   
                 manifold”
                 Kodai Math. J.30, no. 3,  (2007),  361–378.
                 MR2372124 (2008m:53126)
                 Cites the paper:

                        ·    2 – codimensional lightlike submanifolds of almost para – Hermitian manifolds [22]

 

 [Bal10]   Balmus, Adina; Fetcu, Dorel; Oniciuc, Cezar
               „Harmonic and biharmonic maps”                       
                Analele Stiint. Univ. „Al. I. Cuza” Iasi, Tom LVI, fasc. 1 , (2010),  81-96.                

                Cites the paper:

                        ·     On harmonic maps between semi – Riemannian manifolds [12 ]

                        ·     Harmonic maps between almost para – Hermitian manifolds [26 ]

                        ·     f – pluriharmonic maps on manifolds with f - structures [33 ]

                        ·     Harmonic maps and morphisms from the tangent bundle [29 ]


[Bar12]      Barletta, E.; Dragomir, S.; Jacobowitz, H; Soret, M.
                   „b-Completion of pseudo-Hermitian manifolds” 

                   Class. Quantum Grav., vol. 29, (2012), 095007, 13 pp.
                    Cites the paper:

                        ·    Global lightlike manifolds and harmonicity  [37]  

 

 

[Bar13]      Barua, B.; De, U. C.
                   „Characterizations of a Riemannian manifold admitting Ricci solitons,” 

                   Facta Universitatis, (Nis), Ser. Math. Inform.

                   Vol. 28, no. 2, (2013), 127- 132.  
                    Cites the paper:

                        ·   Ricci solitons in manifolds with quasi-constant curvature [44]

 

 

[Bla11]      Blaga, A.
                  ”Affine connections on almost para-cosymplectic manifolds”
                   Czechhoslovak Math. J., 61, f.3, (2011), 863 - 871
                   Cites the paper:

                        ·     Para-Kahler manifolds of quasi – constant P–sectorial curvature [39]

 

[Bla14]      Blaga, A.
                  ”Harmonic subtangent structures”
                   J. Math., 61, f.3, (2014), ID 603078, 5 pp.
                   Cites the paper:

                        ·     Harmonic maps between almost para – Hermitian manifolds [26]

 

[Blai02a]      Blair, D.
                  ”Some generalizations on twistor spaces”
                   World Scientific, Proc. Internat. Conf. Valencia, (2002), 84-95.
                   Cites the paper:

                        ·    “A classification of the almost para – Hermitian manifolds” [15]

[Blai02b]      Blair, D.
                  ”A product twistor space”
                   Serdica Math. J., 28, (2002), 163-174.
                   Cites the paper:

                        ·     “A classification of the almost para – Hermitian manifolds” [15]

[Blaz96]    Blazic, N.
                “Paraquaternionic projective space and pseudo – Riemannian geometry”
                Publ. L’Inst. Math., (Beograd) tom 60 (74) (1996), 101 - 107
                Cites the Ph. D thesis

 

[Bok91]     Bokan, N.
                  „The mahematics heritage of Gauss”
                   World Scientific., (1991), 66-99.
                   Cites the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]

 

[Cal12]     Calvino-Louzao, E, Seoane-Bascoy, J, Vzquez-Abal, ME, Vzquez-Lorenzo, R
                  ”One-harmonic invariant vector fields on three-dimensional Lie groups”
                   J. Geom. Phys., vol. 62, no. 6, (2012), 1532-1547
                   Cites the paper:

                        ·     Harmonic φ - morphisms [32]

 

[Che14]     Chen, Qun; Jost, Jürgen; Qiu, Hongbing
                  ”Omori–Yau maximum principles, V -harmonic maps and their geometric

                   applications”
                   Annals of Global Analysis and Geometry, vol. 46, Issue 3,  (2014), 259-279
                   Cites the paper:

                        ·    Isometric or harmonic mappings of complete Riemannian manifolds [31]

 

[Chi10]     Chiriac, N.
                  ”Semi-invariant submanifolds of (g,F)-manifolds”

                   Surveys in Math. And its Appl., vol. 5, no.1 (2010),201-213.
                   Cites the paper:

                        ·   CR – submanifolds of hyperbolic almost Hermitian manifolds [16] 

 

[Cor11]     Cort´es, V; Leistner, T; Sch¨afer L.; Schulte-Hengesbach F.
                  ”Half-flat structures and special holonomy”

                   Proc. London Math. Soc., vol. 102, no.1 (2011), 113-158.
                   Cites the paper:

                        ·  Some examples of manifolds with hyperbolic structures [21]

 

 

[Cru93]      Cruceanu, Vasile
                  ”Une classe de structures géométriques sur le fibré cotangent”
                   Tensor N. S., vol. 53 (1993), 196 - 201
                   Cites the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]

 

[Cru96]      Cruceanu V.;Fortuny P.; Gadea P.
                    “A survey on neutral and paracomplex geometries”
                    Rocky Mountain J., vol. 26, 1 (1996), 83 – 115
                    Cites the Ph. D thesis and the papers:

                        ·     Almost para – Hermitian structurs on the tangent bundle of on almost    
                             para – co – Hermitian manifold [14]
                        ·     A classification of the almost para – Hermitian manifolds [15]
                        ·     CR – submanifolds of hyperbolic almost Hermitian manifolds [16]
                        ·     The Bochner curvature tensor on a hyperbolic Käler manifold [19]

 

[Dac04]     Dacko, Piotr
                  “On almost para-cosymplectic manifolds”
                  Tsukuba J. Math. 28 (2004), no. 1, 193–213.
                  MR2082229 (2005k:53146)
                  Cites the paper:

                        ·    Almost parahermitian structures on the tangent bundle of on almost  
                            paraco- hermitian manifold [14]

 

 [De11]    De, Uday Chand; Mallick, Sahanous

                 On the existence of generalized quasi-Einstein manifolds
                Arch. Math. Brno, vol. 47, no. 4, ( 2011), 279-291.

                Cites the paper:

                        ·        Generalized Einstein manifolds  [42]

 

[De14]    De, Uday Chand; Mantika, C. A, Suh, Y.J.

                 "On weakly cyclic Z symmetric manifolds” 
                Acta Math. Hungarica, (2014).

                Cites the paper:

                        ·        Weakly-symmetry of the Sasakian lifts on the tangent bundles [48]

 

[Dja12]     Djaa M., EL Hendi H. and Ouakkas S.,
                  “Biharmonic vector field,”
                  Turkish J. Math.. 36 (2012), 463–474
                  Cites the paper:

                        ·    Harmonic φ - morphisms [32]

 

[Dru09a]   Druta, Simona-Luiza

               Kähler-Einstein structures of general natural lifted type on the cotangent      

                bundles.                       
                Balkan J. Geom. Appl. Vol. 14, No. 1, (2009), 30-39.

                Cites the paper:

                        ·   Tangent bundles of quasi-constant holomorphic sectional curvatures [40]

 

[Dru09b]   Druta, Simona-Luiza

               Cotangent bundles with general natural Kähler structures of quasi-constant      

                holomorphic sectional curvatures"           
                Differential geometry. Proceedings of the VIII international colloquium,

                Santiago de Compostela, Spain Hackensack, NJ: World Scientific.

                (2009), 311-315

                Cites the papers:

                        ·   Tangent bundles of quasi-constant holomorphic sectional curvatures [40]

                        ·   Kähler manifolds of quasi – constant holomorphic sectional curvature[43]

 

[Dru10]   Druţă, S.L.; Oproiu, V.

               Tangent sphere bundles of natural diagonal lift type.                       
                Balkan J. Geom. Appl. Vol. 15, No. 1, (2010), 53-67.

                Cites the paper:

                        ·   Tangent bundles of quasi-constant holomorphic sectional curvatures [40]

 

[Dru12a]      Druta-Romaniuc, S.L
                  ”General Natural Riemannian almost product and para-Hermitian structures on tangent
                     bundles”
                    Taiwanese J. Math., vol. 16, no. 2, (2012), 497-510.
                   Cites the paper:

                        ·  Almost parahermitian structures on the tangent bundle of on almost paraco-
                           hermitian manifold [14]

                        ·     A classification of the almost para – Hermitian manifolds [15]


[Dru12b]      Druta-Romaniuc, S.L
                  ”Quasi-constant holomorphic sectional curvatures of tangent bundles with general
                     natural Kahler structures”
                    Analele Stiint. Univ. „Al. I. Cuza” Iasi, Tom LVIII, fasc. 1 , (2012), 181-
                   193.
                   Cites the papers:

                      ·    Tangent bundles of quasi-constant holomorphic sectional curvatures   [40]
                       ·     Kähler manifolds of quasi – constant holomorphic sectional curvature    [43]

 

[Dru12c]      Druta-Romaniuc, S.L.
                  ”Natural diagonal Riemannian almost product and para-Hermitian cotangent bundles”
                  Czech. J. Math., vol. 62, no. 4, (2012), 937-949
                  Cites the paper:


                         ·  Almost parahermitian structures on the tangent bundle of on almost paraco-
                             hermitian manifold [14]

                        ·     A classification of the almost para – Hermitian manifolds [15]


[Dru12d]      Druta-Romaniuc, S.L.
                  ”Para-kahler tangent bundles of constant para-holomorphic sectional curvature”
                  Bull. Iranian Math. Soc., vol. 38, no. 4 (2012), 955-972. 
                  Cites the papers:

                        ·    An example of an almost hyperbolic Hermitian manifold [24] 
                        ·     A classification of the almost para – Hermitian manifolds [15]
                        ·     Almost para – Hermitian structures on the tangent bundle of an almost
                            paracohermitian manifold [14]

 

[Dru13]      Druta-Romaniuc, S.L.
                   "Riemannian almost product and para-Hermitian cotangent

                   bundles of general natural lift type”
                    Acta Mathematica Hungarica, Vol. 139, no. 3 (2013), 228-244. 
                    Cites the papers:

                        ·     Some examples of manifolds with hyperbolic structures [21]  

                        ·     An example of an almost hyperbolic Hermitian manifold [24]
                        ·     A classification of the almost para – Hermitian manifolds [15]
                         ·     Almost para – Hermitian structures on the tangent bundle of an almost

                             paracohermitian manifold [14]

[Dru15]      Druta-Romaniuc, S.L.
                   "A study on the para-holomorphic sectional curvature on para-kahler cotangent

                   bundle”
                    Analele Stiint. Univ. „Al. I. Cuza” Iasi, Tom LVI, fasc. 1 , (2015), 253-262
                    Cites the papers:

                        ·     Some examples of manifolds with hyperbolic structures [21]  

                        ·     An example of an almost hyperbolic Hermitian manifold [24]
                        ·     A classification of the almost para – Hermitian manifolds [15]
                         ·     Almost para – Hermitian structures on the tangent bundle of an almost

                             paracohermitian manifold [14]

 

 

[Dug94]     Duggal K.L.; Ianuş S.; Pastore A. M.
                  “Harmonic maps on f – manifolds with semi – Riemannian metrics”
                  Proc. Conf. Geom. Top Cluj, (1994), 47 – 55
                  Cites the paper:

                        ·     On harmonic maps between semi – Riemannian manifolds [12]

 

[Dug01]     Duggal K.L.; Ianuş S.; Pastore A. M.
            “Maps interchanging $f$f -structures and their harmonicity”
                   Acta Appl. Math. 67 (2001), no. 1, 91–115.
                   MR1847885 (2002i:53085)
                   Cites the papers:

                        ·   Quasi-harmonicity for semi-Riemannian manifolds [36]
                        ·   Harmonic maps between almost hyperbolic Hermitian manifolds [23]

 

[Dug03]      Duggal, K.L.
                   ”Harmonic maps, morphisms and globally null manifolds”
                    Internat. J. Pure Appl. Math., vol. 6, no. 4, (2003), 421-438.
                    Cites the paper:

                          ·     On harmonic maps between semi – Riemannian manifolds  [12]

 

[Dug06]     Duggal, K. L.; Sahin, B.    
                    “Cauchy-Riemann lightlike submanifolds of Kaehler manifolds”
                    Acta Math. Hungar. 112 (2006), no. 1-2, 107–130.
                    MR2251134 (2007d:53095)
                    Cites the paper:

                        ·   Global lightlike manifolds and harmonicity [37]

 

[Dug07]     Duggal, K. L.; Sahin, B.    
                  “Lightlike submanifolds of Indefinite Sasakian manifolds”
                  International Journal of Math. And Math. Sciences, Vol. 2007,
                  Article ID 57585, 1-21.
                  Cites the paper:

                        ·   Global lightlike manifolds and harmonicity [37]
 

 

[Dug09]      Duggal, K. L.; Sahin, B. 
                    “Generalized Cauchy-Riemann lightlike submanifolds of indefinite      
                    Sasakian manifolds”.
                    Acta Math. Hungar. 122, no. 1-2,  (2009),  45–58.
                    MR2487459 (2010e:53095)
                    Cites the paper:

                        ·   Global lightlike manifolds and harmonicity [37]

 

 

[Dum12]     Dumitru, D.
                    “A characterization of generalized quasi-Einstein manifolds”.    
                   Novi Sad J. Math., 42 (2012), 89–94.
                    Cites the paper:

                        ·   Characterizations of quasi-Einstein manifolds [41]

 

 

[Eni08]    Eni, C..
                    „A pseudo-Riemannian metric on the tangent bundle of a Riemannian manifold”,
                   
Balkan J. Geom. Appl. Vol. 13, No. 2, (2008), 35-42.
                    Cites the paper:

                        ·   Tangent bundles of quasi-constant holomorphic sectional curvatures [40]

 

[Erd01]     Erdem, Sadettin
                  “Paraholomorphic structures and the connections of vector bundles   
                  over paracomplex manifolds”
                  New Zealand J. Math.30 (2001), no. 1, 41–50.
                  MR1839522 (2002c:53042)
                  Cites the paper:

                       ·     The existence problem of hyperbolic structures on vector bundles [20]

 

[Erd02]     Erdem, Sadettin
                 “On almost (para)contact (hyperbolic) metric manifolds and harmonicity of   
                  $(\phi,\phi')$(φ,φ) -holomorphic maps between them”
                  Houston J. Math. 28 (2002), no.1, 21–45
                  MR1876938 (2002k:53124)
                  Cites the papers:

                        ·     Some examples of manifolds with hyperbolic structures [21]
                        ·     Harmonic maps between almost para – Hermitian manifolds [26]

 

[Erd03]     Erdem, Sadettin
                  “Harmonicity of mps between (indefinite) metric f – manifolds and φ –   
                  pseudo harmonic morphisms”
                  Publ. Math. Debrecen, 63, fasc. 3 (2003), 317 - 341
                  Cites the paper:

                        ·     Harmonic maps between almost para – Hermitian manifolds [26]

 

[Erd04]     Erdem, Sadettin
                 “$\phi$φ -pseudo harmonic morphisms, some subclasses and their                  
                  liftings to tangent bundles”
                  Houston J. Math. 30 (2004), no. 4, 1009–1038 (electronic)
                  MR2110247 (2005h:53113)
                  Cites the paper:

                       ·   Harmonic maps and morphisms from the tangent bundle [29]

 

[Eta92a]     Etayo, F.
                  “The structure tensors and the sectional curvature function of para – Kählerian   
                   space forms”
                   Seria di departamento di matematica estadistica y compuracion,   
                   Universidad de Cantabria, no 6 (1992), 1 - 9
                   Cites the Ph. D thesis

 

[Eta92b]      Etayo, F. ; Reyes, E.  
                    “Normality and structure transfer in (J4 = 1) manifolds”
                    Rendiconti Sem. Univ. Cagliari, vol. 62, 1 (1992), 1 - 7
                    Cites the Ph. D thesis

 

[Eta93a]     Etayo, F.
                   “The quaternionic projective spaces”
                   Rendiconti di Matematica, Roma, VII, vol. 13 (1993), 125 - 131
                   Cites the Ph. D thesis

 

[Eta93b]     Etayo, F.
                   “A coordinate – free survey on pseudo - connections”
                   Rev. Acad. Canar. Cienc., V, 1 (1993), 125 - 137
                  Cites the Ph. D thesis

 

[Eta95]     Etayo, F. ; Fioravanti, M.
                 “CR – submanifolds of the paracomplex projective space”
                 Publ. Debrecen, tom 47, f. 1 – 2 (1995), 151 - 160
                 Cites the Ph. D thesis

 

[Eta99]     Etayo, F. ; Fioravanti, M. ;Trias, U.
                 “On the submanifolds of an almost para – Hermitian manifold”
                  Acta Math. Hungar, 85 (1999) no 4, 277 - 286
                  Cites the Ph. D thesis

 

[Gad92a]     Gadea, P.; Munoz – Masque, J.
                    “Classification of homogeneons para – Kahlerian space forms”
                    Nova J. Alg. Geom., vol. 1, 2 (1992), 111 - 124
                    Cites the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]

 

[Gad92b]     Gadea, P.; Oubina, J. A.
                    “Homogeneous pseudo – Riemannian structures and homogeneons almost    
                    para – Hermitian structures”
                    Houston J. Math, vol. 18, 3 (1992), 449 - 465
                    Cites the Ph. D thesis and the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]

 

[Gad94]     Gadea, P. ; Montesinos Amilibia, A.
                  “Totally umbilical pseudo – Riemannian submanifolds of the paracomplex   
                   projective space”
                   Czech. Math. J., 44 (119), 1994, Praha, 741 - 756
                   Cites the Ph. D thesis

 

[Gad95a]    Gadea, P. ; Oubina, J. A.
                  “Homogeneous almost para – Hermitian structures”
                   Indian J. Math., 26 (4), (1995), 351 - 362
                   Cites the Ph. D thesis

 

[Gad95b]    Gadea, P. ; Munoz – Masque, J.
                  “Classification of non – flat para – Kählerian space forms”
                  Houston J. Math., vol. 21, 1 (1995), 89 - 94
                  Cites the Ph. D thesis

 

[Gad96]     Gadea, P. ; Munoz – Masque, J.
                    “Symmetric structures on the cotangent bundles of the real and complex    
                    Grassmannians”
                    Indian J. Pure Appl. Math., 27 (1), (1996), 1 - 18
                    Cites the Ph. D thesis

 

[Gad97]     Gadea, P. ;  Hernandez – Encinas, L.
                  “Reflector spaces over the 4 – dimensional Kaneyuki – Kozai’s para –  
                  Hermitian symmetric Spaces”
                  Balkan J. Geom. Apll., 2 (1997) no 1, 41 - 49
                  Cites the Ph. D thesis

 

 [Gul13a]    Gulbahar,  Mehmet; Kılıc¸ Erol; Keles, Sadik

                 Chen-like inequalities on lightlike hypersurfaces of a Lorentzian manifold
                J. Inequal. Appl.,  2013, Article ID 266, 18 p..

                Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

 

[Gul13b]    Gulbahar,  Mehmet; Kılıc¸ Erol; Keles, Sadik

                 „Some  inequalities on screen homothetic lightlike hypersurface

                 of a Lorentzian manifold”
                Taiwanese Journal of Mathematics,

                vol. 17, no. 6, (2013), 2083-2100.

                Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

[Gup10]      Gupta, Ram-Shankar; Upadhyay, Abhitosh; Sharfuddin,A..
                   ”Slant lightlike submanifolds of indefinite Kenmotsu manifolds”
                    Turkish. J. Math., vol. 34, (2010),1-13.
                   Cites the paper:

                  ·     Global lightlike manifolds and harmonicity [37]


 

[Gup11a]      Gupta, Ram-Shankar; Upadhyay, Abhitosh; Sharfuddin,A..
                   ”Slant lightlike submanifolds of indefinite cosymplectic manifolds”
                    Mediterr. J. Math., vol. 8, no. 2, (2011), 215-227.
                   Cites the paper:

                  ·     Global lightlike manifolds and harmonicity [37]

 

[Gup11b]      Gupta, Ram-Shankar
                   ”Screen slant lightlike submanifolds of indefinite cosymplectic manifolds”
                    Georgian Math. J., vol. 18, (2011), 83-97.
                   Cites the paper:

                  ·     Global lightlike manifolds and harmonicity [37]

 

[Gup12]      Gupta, Ram-Shankar; Upadhyay, Abhitosh; Sharfuddin,A..
                   ”Generalized Cauchy-Riemann lightlike submanifolds of indefinite

                   cosymplectic manifolds”
                    Analele St. Uniuv. Iasi., vol. 58, f. 2 (2012), 381-394.
                   Cites the paper:

                  ·     Global lightlike manifolds and harmonicity [37]

[Hai12a]   Haider, S.M. Khursheed; Thakur, Mamta; Advin

                 Geodesic lightlike submanifolds of indefinite Kenmotsu manifolds
                ISRN Geom. 2012, Article ID 804520, 17 p.              

                Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

 

[Hai12b]   Haider, S.M. Khursheed; Thakur, Mamta; Advin

                 Geodesic lightlike submanifolds of indefinite Kenmotsu manifolds
                   KYUNGPOOK Math. J., 52 (2012), 443-457.              

                Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

 

 

[Hal14]   Halder,K.; Pal, B.; Bhattacharyya, A.; De, T

               „Characterization of super quasi-Einstein manifold”                       
                Analele Stiint. Univ. „Al. I. Cuza” Iasi, Tom LX, fasc. 1 , (2014), 99-108.                

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                        ·     Characterizations of quasi-Einstein manifolds [41 ]

 

[Ian08]      Ianus, Stere;Vilcu, Eduard  
                   ”Some constructions of almost Para-hiperhermitian structures on manifolds

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                  ·     Some examples of manifolds with hyperbolic structures [21]

 

[Ian99]      Ianus, Stere; Pastore, A. M.
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                  ·     Harmonic maps between almost para – Hermitian manifolds [26]

 

[Ich08]      Ichiyama T., Inoguchi J.I. and Urakawa H.,  
                   ”Bi-harmonic maps and bi-Yang-Mills fields”

                    Note Mat., 28 suppl. n. 1 (2008) 233–275.

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                  ·      Yang – Mills analogue of biharmonic maps [35]

 

[Iva05]     Ivanov, Stefan; Zamkovoy, Simeon  
                 “Parahermitian and paraquaternionic manifolds”
                 Differential Geom. Appl.23, no. 2, (2005),  205–234.   
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                 Cites the papers:

                        ·     Some examples of manifolds with hyperbolic structures [21]
                        ·     Harmonic maps between almost para – Hermitian manifolds [26]
                        ·     A classification of the almost para – Hermitian manifolds [15]
                        ·   An example of an almost hyperbolic Hermitian manifold [24]

 

[Kas13]   Kasap, Zeki
               „Weyl-mechanical systems on tangent manifolds of constant W-sectional

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                Int. J. Geom. Methods Mod. Phys. 10, No. 10, Article ID 1350053, 13 p.

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                Cites the paper:

                        ·       Para-Kähler manifolds of quasi – constant P-sectional curvature   [39]

 

 [Kil08]     Kılıç, Erol; Şahin, Bayram     
                “Radical anti-invariant lightlike submanifolds of semi-Riemannian product   
                manifolds”
                Turkish J. Math. 32, no. 4,  (2008),  429–449.
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                Cites the paper:

                        ·    2 – codimensional lightlike submanifolds of almost para – Hermitian manifolds [22]

 

[Kil11]     Kılıç, Erol; Şahin, Bayram;  Keles¸ Sadic  
                “Radical anti-invariant lightlike submanifolds of semi-Riemannian product   
                manifolds”
                Internat. Electronic J. Geom., Vol. 4, no. 2,  (2011),  120-135.
                Cites the paper:

                        ·    2 – codimensional lightlike submanifolds of almost para – Hermitian manifolds [22]

 

 

[Kob91]     Kobayashi, Minoru
                  “Some results on anti-quanternion submanifolds in Kähler quaternion    
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                        ·   On QR  – submanifolds of a quanternionic Kählerian manifold [10]

 

[Kob94]     Kobayashi, Minoru
                   “Two theorems on symmetric twofold CR – submanifolds in a quaternion   
                   projective space”
                   Tensor, vol. 55 (1994), 197 – 201
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                        ·   On QR  – submanifolds of a quanternionic Kählerian manifold [10]

 

[Kob95]     Kobayashi, Minoru
                    “CR – submanifolds in manifolds with a Sasakian 3 - structure”
                    Tensor N. S., 56 (1995), 296 - 300
                    Cites the paper:

                        ·   On QR – submanifolds of a quanternionic Kählerian manifold [10]

 

[Kum13]     Kumar, Sangeet; Kumar, Rakesh; Nagaich, R.K.
                    „GCR- lightlike submanifolds of indefinite nearly Kahler manifolds”
                    Bull. Korean Math. Soc., vol. 50, no. 4(2013), 1173-1192.
                    Cites the paper:

                        ·   Global lightlike manifolds and harmonicity [37]

 

 

[Law05]      Lawn, Marie-Amélie; Schäfer, Lars  
                   “Decompositions of para-complex vector bundles and para-complex affine  
                    immersions”
                    Results Math.48 (2005), no. 3-4, 246–274
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                        ·     The existence problem of hyperbolic structures on vector bundles [20]

 

[Luc01]      Łuczyszyn, Dorota
                  “On Bochner semisymmetric para-K¨ahlerian manifolds.”
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                   Cites the paper:

                         ·     The Bochner curvature tensor on a hyperbolic Käler manifold [19]

 

 

[Luc03]      Łuczyszyn, Dorota
                  “On pseudosymmetric para-Kählerian manifolds”
                  Beiträge Algebra Geom.44, no. 2,  (2003),  551–558.
                   Cites the paper:

                         ·     The Bochner curvature tensor on a hyperbolic Käler manifold [19]

 

[Luc05]      Łuczyszyn, Dorota
                  “On Bochner flat para-Kählerian manifolds”
                  Cent. Eur. J. Math. 3, no. 2, (2005),  331–341  
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                  Cites the paper:

                         ·     The Bochner curvature tensor on a hyperbolic Käler manifold [19]


[Luc08]      Łuczyszyn, D; Olszak, Z. 
                  “On paraholomorphically pseudosymmetric para-Kählerian manifolds.”
                 J. Korean Math. Soc. 45 (2008) pp. 953-963.
                   Cites the paper:

                         ·     The Bochner curvature tensor on a hyperbolic Käler manifold [19]

 

 

 [Mar13]   Maralabhavi, Y.B.Shivaprasanna, G.S.Somashekhara, G

               “On 3-dimensional (ε,δ)-trans-sasakian structure”,

               International Journal of Pure and Applied Mathematics

               Vol. 87, no. 3, (2013), 405-413.

                 Cites the paper:

                        ·       Ricci solitons in manifolds with quasi-constant curvature [44]


[Miu14]      Miura, Kouhei
                  “Paracomplex lightlike submanifolds of almost parahermitian manifolds”
                Internat. Electronic J. of Geom, vol.7, no. 2, (2014), 7-17.
                   Cites the paper:

                         ·     Global lightlike manifolds and harmonicity  [37]

 

 

[Nag12a]     Nagaraja, G.; Premalatha, C. R.
                   “Ricci solitons in f-Kenmotsu manifolds and 3-dimensional trans-Sasakian

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                        ·     Ricci solitons in manifolds with quasi-constant curvature [44]

 

[Nag12b]     Nagaraja, G.; Premalatha, C. R.
                   “Ricci solitons in Kenmotsu manifolds,” 

                  Journal of Mathematical Analysis, vol. 3, no. 2, (2012), 18–24. 
                  Cites the paper:

                        ·     Ricci solitons in manifolds with quasi-constant curvature [44]

 

[Nak11]     Nakova,G; Zamkovoy, S..
                   “Eleven classes of almost paracontact manifolds with semi-Riemannian metric

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                  Recent Progress in Differential Geometry and its Related Fields, Adachi T.,

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                  Cites the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]

 

 

[Niv12]     Nivas, R; Ahmad, M; , Nath Pathak, B; Pathak, V. N.
                   “Certain Structures and Curvature Tensors Induced in the Tangent Bundle."

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                  Cites the paper:

                        ·     Some structures induced on the tangent bundle of on almost contact

                             manifold [4]

 

[Ols96]     Olszak, Z.
                   “Four – dimensional Para – Hermition manifolds”
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                  Cites the paper:

                        ·     A classification of the almost para – Hermitian manifolds [15]

 

[Opr97]     Oproiu V.; Papaghiuc N.; Mitric G.
                   “Some classes of parahermitian structures on cotangent bundles”
                    Analele Univ. “Al. I. Cuza” Iasi, Tom XLIII, f 1 (1997), 7 – 22
                    Cites the papers:

                        ·    Some examples of manifolds with hyperbolic structures [21]
                        ·     A classification of the almost para – Hermitian manifolds [15]

 

 [Opr09]   Oproiu, V.; Papaghiuc, N.

          „Some new geometric structures of natural lift type on the tangent bundle”,    
         Bulletin Mathematique de la Societe des Sciences Mathematiques de      

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                        ·   Tangent bundles of quasi-constant holomorphic sectional curvatures [40]

 

[Opr10]   Oproiu, V.

          „Hyper-Kähler structures on the tangent bundle of a Kähler manifold”,   
                Balkan J. Geom. Appl. Vol. 15, No. 1, (2010),104-119.

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                        ·   Tangent bundles of quasi-constant holomorphic sectional curvatures [40]

 

[Pop97]     Popescu, Marcela
                 “Geometria subfibratelor vectoriale”
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                        ·     On regular F – general connections [8]

 

[Prv05]      Prvanovic, Mileva.
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                   Cites the paper:                     

                        ·     The Bochner curvature tensor on a hyperbolic Kähler manifold   [19]

 

[Sac13]   Sachdeva, rashmi; Kumar, Rakesh; Bhatia, satvinder Singh

               Nonexistence of totally contact umbilical slant lightlike submanifolds of indefinite      

                 cosymplectic manifolds”

                 ISRN Geom, 2013,  Article   ID 231869, 8 p.   

                 Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

 

[Sac14]      Sachdeva, Rashmi; Kumar, Rakesh; Bhatia, Satvinder Singh
                  ”Nonexistence of totally contact umbilical slant lightlike submanifolds of

                  indefinite  Sasakian manifolds”
                  Bull. Iranian Math. Soc., vol. 40, no. 5 (2014), 1135-1151. 
                   Cites the paper:                     

                        ·     Global lightlike manifolds and harmonicity  [37]

 

 

[Sah07]      Sahin, Bayram
                  ”Screen conformal submersions between lightlike manifolds

                  and semi-Riemannian manifolds and their harmonicity” 
                  Int. J. Geom. Methods Mod. Phys., vol. 4, (2007), 987-1003 
                   Cites the paper:                     

                        ·     Global lightlike manifolds and harmonicity  [37]

 

[Sah08]    Sahin, Bayram

                 „Slant lightlike submanifolds of indefinite Hermitian manifolds”
                Balkan J. Geom. Appl., vol. 13, no. 1, (2008), 107-119.

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                        ·       Global lightlike manifolds and harmonicity  [37]

 

 

[Sah12]    Sahin, Bayram; Cumali, Yildirim

                 Slant lightlike submanifolds of indefinite Sasakian manifolds
                Filomat,
, vol. 26, no. 2, (2012), 71-81

                Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

 

[Sak08]     Sakaki, Makoto
                  "Minimal lightlike hypersurfaces in Lorentzian space forms”

                  Internat. J. Pure Appl. Math., vol. 48, no. 4, (2008), 595-600
                   Cites the paper:                     

                        ·     Global lightlike manifolds and harmonicity  [37]

 

[Sak09a]      Sakaki, Makoto
                  "Minimal lightlike Monge hypersurfaces in semi-Euclidean spaces”

                  Internat. J. Pure Appl. Math., vol. 54, no. 4, (2009), 543-549
                   Cites the paper:                     

                        ·     Global lightlike manifolds and harmonicity  [37]

 

[Sak09b]     Sakaki, Makoto
                  ”Minimal lightlike hypersurfaces in R4” 

                  Balkan J. Geom. Appl., vol. 14, no. 1, (2009), 84-90
                   Cites the paper:                     

                        ·     Global lightlike manifolds and harmonicity  [37]

 

 

[San93]     Santos, G. ; Gadea, P.M.
                 “A Weitzenbock formula for the Laplaican of para – Kähler soace forms”
                 Rend. Sem. Mat. Messina, Serie II, vol. II (1993), 81 - 89
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[Sch10]     Schulte-Hengesbach, F
                  ”Half-flat structures on Lie groups”.

                  PhD thesis, Hamburg (2010)
                   Cites the paper:                     

                        ·     Some examples of manifolds with hyperbolic structures [21]


 

[Shu14]    Shukla,  S.S.;  Yadav, Akhilesh

                 „Lightlike submanifolds of indefinite para-Sasakian manifolds”
                Matematiqki Vesnik, vol. 66, no. 4, (2014), 371-386.

                Cites the paper:

                        ·       Global lightlike manifolds and harmonicity  [37]

 

[Shu15]     Shukla,  S.S.;  Yadav, Akhilesh
                  ”Screen pseudo-slant lightlike submanifolds of indefinite Sasakian manifolds” 

                  Mediterranean J. Math., (2015).
                   Cites the paper:                     

                        ·     Global lightlike manifolds and harmonicity  [37]

 

[Sri14]     Srivastava, K. ; Srivastava, S.K.
                  ”On a Class of α-Para Kenmotsu Manifolds”

                  Mediterranean Journal of Mathematics, (2014), 1-9..
                   Cites the paper:                     

                        ·     Second order parallel tensors and Ricci solitons in 3-dimensional 

                             normal paracontact geometry [50]

 

[Sul12]    Sular, Sibel; Özgür, Cihan

                 Characterizations of generalized quasi-Einstein manifolds
                   An. Ştiinţ. Univ. ``Ovidius" Constanţa, Ser. Mat. Vol. 20,

                  no. 1, (2012),   407-416              

                 Cites the paper:

                        ·       Characterizations of quasi-Einstein manifolds [41]

 

[Tri96]     Tripathi M.M.
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                        ·     Almost semi-invariant submanifolds of a cosymplectic manifold [7]


 

[Tri97]     Tripathi, M.M.
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                        ·     Almost semi-invariant submanifolds of a cosymplectic manifold [7]
                        ·    Almost semi-invariant submanifolds of locally product Riemannian manifolds [13]


 

 [Vac12]   Vaccaro, Massimo
               „(Para-)Hermitian and (para-)Kahler manifolds of a para-quaternionic Kahler

                manifold”                              
                Differential  Geometry and its Applications, vol 30, (2012), 347-364.

                 Cites the paper:

                        ·       A classification of the almost para – Hermitian manifolds [15]

 

[Vil08]   Vilcu, Gabriel Eduard
              
Normal semi-invariant submanifolds of paraquaternionic
                space forms and mixed 3-structures
                       
                
Proceedings of The International Conference “Differential Geometry and                         

                Dynamical Systems”, Bucharest 2007, BSG Proceedings 15

                (2008), Geometry Balkan Press, 221-229.
                 Cites the paper:

                        ·       On QR-submanifolds of a quaternion Kaehlerian manifold   [10]

 

[Vil10]   Vilcu, Gabriel Eduard
              
3-submersions from QR-hypersurfaces of quaternionic Kaehler
                manifolds, Annales Polonici Mathematici
                       
               
Annales Polonici Mathematici, vol.98, No.3, (2010), 301-309

                 Cites the paper:

                        ·       On QR-submanifolds of a quaternion Kaehlerian manifold   [10]

 

[Vil11]   Vilcu, Gabriel Eduard
              
Para-hyperhermitian structures on tangent bundles                       
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                 Cites the paper:

                       ·  Tangent bundles of quasi-constant holomorphic sectional curvatures   [40]

 

[Vil13]   Vilcu, Gabriel Eduard
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anonical foliations on paraquaternionic Cauchy–Riemann
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                 Cites the paper:

                        ·   CR-submanifolds of hyperbolical almost Hermitian manifolds  [16]

 

[Wan14]   Wang, Yaning; Liu, Ximin
               "Second Order Parallel Tensors on Almost Kenmotsu Manifolds

                Satisfying the Nullity Distributions,” 
                       
               
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                        ·   Ricci solitons in manifolds with quasi-constant curvature [44]