%0 Journal Article
%A R. S. Levitin
%T The uniqueness of $O$-curves in a normal domain of the second kind
%J Differencialʹnye uravneniâ
%D 1973
%P 437-448
%V 9
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1973_9_3_a4/
%G ru
%F DE_1973_9_3_a4