@article{1178244202,
author = {Kashiwabara, Sh\=obin},
title = {On the parallelisability under Riemannian metrics of direction fields over $3$-dimensional manifolds},
journal = {Tohoku Math. J. (2)},
volume = {14},
number = {4},
year = {1962},
pages = { 24-47},
language = {en},
url = {http://dml.mathdoc.fr/item/1178244202}
}
Kashiwabara, Shōbin. On the parallelisability under Riemannian metrics of direction fields over $3$-dimensional manifolds. Tohoku Math. J. (2), Tome 14 (1962) no. 4, pp. 24-47. http://gdmltest.u-ga.fr/item/1178244202/