Department of Mathematics, Faculty of Science, Science University of Tokyo, Tokyo 162, Japan
Bibliografia
[1] M. Ako and K. Yano, On hypersurfaces of an odd-dimensional sphere as fibred spaces, in: Differential Geometry in Honor of K. Yano, Kinokuniya, Tokyo 1972, 1-19.
[2] I. Hasegawa and T. Nakane, On Sasakian manifolds with vanishing contact Bochner curvature tensor, Hokkaido Math. J. 9 (1980), 184-189.
[3] S. Ishihara and M. Konishi, Fibred Riemannian spaces with Sasakian 3-structure, in: Differential Geometry in Honor of K. Yano, Kinokuniya, Tokyo 1972, 179-194.
[4] B. H. Kim, Fibred Riemannian spaces with contact structure, Hiroshima Math. J. 18 (1988), 493-508.