@article{100038,
author = {Eduard \v Cech},
title = {Proektivnaia differentsial'naia geometriia sootvetstvii mezhdu dvumia prostranstvami. I},
journal = {Czechoslovak Mathematical Journal},
volume = {02},
year = {1952},
pages = {91-107},
zbl = {0052.38504},
mrnumber = {0063100},
language = {ru},
url = {http://dml.mathdoc.fr/item/100038}
}
Čech, Eduard. Проективная дифференциальная геометрия соответствий между двумя пространствами. I. Czechoslovak Mathematical Journal, Tome 02 (1952) pp. 91-107. http://gdmltest.u-ga.fr/item/100038/