%0 Journal Article
%A N. N. Ladis
%T The structural stability of certain systems of differential equations
%J Differencialʹnye uravneniâ
%D 1971
%P 419-423
%V 7
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_3_a4/
%G ru
%F DE_1971_7_3_a4