%0 Journal Article
%A K. Sh. Ramazanova
%T The classification of two-dimensional surfaces in $E_4$ according to type of congruences of ideal lines of the first and second kind
%J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki
%D 1966
%P 41-49
%V 126
%N 1
%U http://geodesic.mathdoc.fr/item/UZKU_1966_126_1_a4/
%G ru
%F UZKU_1966_126_1_a4