@article{1178243313,
author = {Lai, Hon-fei},
title = {Weakened Bertrand curves},
journal = {Tohoku Math. J. (2)},
volume = {19},
number = {4},
year = {1967},
pages = { 141-155},
language = {en},
url = {http://dml.mathdoc.fr/item/1178243313}
}
Lai, Hon-fei. Weakened Bertrand curves. Tohoku Math. J. (2), Tome 19 (1967) no. 4, pp. 141-155. http://gdmltest.u-ga.fr/item/1178243313/