%0 Journal Article
%A P. V. Sokolov
%T A geometric picture of the integral surfaces near a singular integral element of a first order partial differential equation
%J Differencialʹnye uravneniâ
%D 1971
%P 2225-2233
%V 7
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_12_a11/
%G ru
%F DE_1971_7_12_a11