References
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- Semi-Riemannian geometry B. O'Neill
- Bull. of Yamagata Univ. Nat. Sci. v.12 On Lorentzian paracontact manifolds K. Matsumoto
- J. Korean Math. Soc. v.14 no.1 Conformal Killing vector fields in a p-Sasakian manifold K. Matsumoto
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- Mathematische Annalen v.219 Invariant submanifolds in Sasakian manifolds M. Kon
- Korean J. Math. Sciences v.4 On sectional curvature of a normal contact Lorentzian manifold T. Ikawal;J. B. Jun