@article{100144, author = {Eduard \v Cech}, title = {O tochechnykh izgibaniiakh kongruentsii priamykh}, journal = {Czechoslovak Mathematical Journal}, volume = {05}, year = {1955}, pages = {234-273}, zbl = {0068.15803}, mrnumber = {0074858}, language = {ru}, url = {http://dml.mathdoc.fr/item/100144} }
Čech, Eduard. О точечных изгибаниях конгруэнции прямых. Czechoslovak Mathematical Journal, Tome 05 (1955) pp. 234-273. http://gdmltest.u-ga.fr/item/100144/