@article{1138845442,
author = {\^Otsuki, Tominosuke and Shiohama, Katsuhiro},
title = {A theory of ruled surfaces in $E^{4}$},
journal = {Kodai Math. Sem. Rep.},
volume = {19},
number = {1},
year = {1967},
pages = { 370-380},
language = {en},
url = {http://dml.mathdoc.fr/item/1138845442}
}
Ôtsuki, Tominosuke; Shiohama, Katsuhiro. A theory of ruled surfaces in $E^{4}$. Kodai Math. Sem. Rep., Tome 19 (1967) no. 1, pp. 370-380. http://gdmltest.u-ga.fr/item/1138845442/