References
- Y.Agaoka, B.H.Kim and S.D.Lee, Conharmonically flat fibred Riemannian space, Mem. Fac. Int. Arts and Sci., Hiroshima Univ., 26(2000), 109-115.
- A.Besse, Einstein manifolds, Springer-Verlag, Berlin(1987).
- B.Y.Chen, Geometry of submanifolds, Marcel Dekker, New York,(1973).
- B.Y.Chen and K.Yano, Special conformally flat spaces and Canal hypersurfaces, Tohoku Math.J.,25(1973),177-184. https://doi.org/10.2748/tmj/1178241376
- Y.Ishi, On conharmonic transformation, Tensor N.S 7(1957), 73-80.
- B.H.Kim, Warped products with critical Riemannian metric, Proc.Japan Acad., 71(1995), 113-118.
- B.H.Kim, I.B.Kim and S.D.Lee and J.H.Choi, Conformally flat warped product Riemannian manifolds, Korean J. of computational and applied Math., 7(2000), 297-303.
- Y. Tashiro and B. H. Kim, Fibred Riemannian space with K-contact structure, Comm. Korean Math. Soc., 8(1993), 475-481.