%0 Journal Article
%A M. E. Tsypkin
%T Differential geometry of a ruled space and its applications to the theory of ruled surfaces
%J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki
%D 1952
%P 77-99
%V 112
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZKU_1952_112_10_a6/
%G ru
%F UZKU_1952_112_10_a6