%0 Journal Article
%A R. I. Putilova
%T A qualitative study of a certain system of three differential equations by means of integral surfaces
%J Differencialʹnye uravneniâ
%D 1974
%P 1533-1536
%V 10
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1974_10_8_a23/
%G ru
%F DE_1974_10_8_a23