%0 Journal Article
%A V. N. Rybakov
%T Quasi-normal families of surfaces on congruences of lines and circles
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1960
%V 15
%N 5
%U http://geodesic.mathdoc.fr/item/RM_1960_15_5_a16/
%G ru
%F RM_1960_15_5_a16