%0 Journal Article
%A L. P. Cherenkova
%T The simultaneity of systems of two differential equations
%J Differencialʹnye uravneniâ
%D 1971
%P 1723-1726
%V 7
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_9_a24/
%G ru
%F DE_1971_7_9_a24