@article{1261415776,
author = {TAKEDA, Kusuo},
title = {Principal ruled surfaces of a rectilinear congruence.},
journal = {J. Math. Soc. Japan},
volume = {4},
number = {3-4},
year = {1952},
pages = { 286-295},
language = {en},
url = {http://dml.mathdoc.fr/item/1261415776}
}
TAKEDA, Kusuo. Principal ruled surfaces of a rectilinear congruence.. J. Math. Soc. Japan, Tome 4 (1952) no. 3-4, pp. 286-295. http://gdmltest.u-ga.fr/item/1261415776/