@article{100035,
author = {Zbyn\v ek N\'aden\'\i k},
title = {Krivye Bertrana v piatimernom prostranstve},
journal = {Czechoslovak Mathematical Journal},
volume = {02},
year = {1952},
pages = {57-87},
zbl = {0048.38702},
mrnumber = {0053564},
language = {ru},
url = {http://dml.mathdoc.fr/item/100035}
}
Nádeník, Zbyněk. Кривые Бертрана в пятимерном пространстве. Czechoslovak Mathematical Journal, Tome 02 (1952) pp. 57-87. http://gdmltest.u-ga.fr/item/100035/