@article{1178244168, author = {Okumura, Masafumi}, title = {Some remarks on space with a certain contact structure}, journal = {Tohoku Math. J. (2)}, volume = {14}, number = {4}, year = {1962}, pages = { 135-145}, language = {en}, url = {http://dml.mathdoc.fr/item/1178244168} }
Okumura, Masafumi. Some remarks on space with a certain contact structure. Tohoku Math. J. (2), Tome 14 (1962) no. 4, pp. 135-145. http://gdmltest.u-ga.fr/item/1178244168/