@article{1178244304,
author = {Sasaki, Shigeo and Hatakeyama, Yoji},
title = {On differentiable manifolds with certain structures which are closely related to almost contact structure, II},
journal = {Tohoku Math. J. (2)},
volume = {13},
number = {3},
year = {1961},
pages = { 281-294},
language = {en},
url = {http://dml.mathdoc.fr/item/1178244304}
}
Sasaki, Shigeo; Hatakeyama, Yoji. On differentiable manifolds with certain structures which are closely related to almost contact structure, II. Tohoku Math. J. (2), Tome 13 (1961) no. 3, pp. 281-294. http://gdmltest.u-ga.fr/item/1178244304/