Geodesic
Biharmonic Curves in Lorentzian Para-Sasakian Manifolds
Bulletin of the Malaysian Mathematical Society, Tome 33 (2010) no. 2

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In this paper we give necessary and sufficient conditions for spacelike and timelike curves in a conformally at, quasi conformally at and conformally symmetric 4-dimensional Lorentzian Para-Sasakian ( LP -Sasakian) manifold to be proper biharmonic. Also, we investigate proper biharmonic curves in the Lorentzian sphere .
Classification : 58C40, 53C42, 53C25. 
Sadik Keles; Selcen Yüksel Perktas; Erol Kiliç. Biharmonic Curves in Lorentzian Para-Sasakian Manifolds. Bulletin of the Malaysian Mathematical Society, Tome 33 (2010) no. 2. http://geodesic.mathdoc.fr/item/BMMS_2010_33_2_a14/
@article{BMMS_2010_33_2_a14,
     author = {Sadik Keles and Selcen Y\"uksel Perktas and Erol Kili\c{c}},
     title = {Biharmonic {Curves} in {Lorentzian} {Para-Sasakian} {Manifolds}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2010},
     volume = {33},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2010_33_2_a14/}
}
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