%0 Journal Article
%A G. M. Amatova
%T Singular points of systems with shocks
%J Differencialʹnye uravneniâ
%D 1985
%P 1613-1615
%V 21
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_9_a18/
%G ru
%F DE_1985_21_9_a18