%0 Journal Article
%A R. M. Geidel'man
%T Bending of congruences of straight lines in the three-dimensional extended non-Euclidean space
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1966
%P 39-48
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1966_5_a5/
%G ru
%F IVM_1966_5_a5