%0 Journal Article
%A B. Puzha
%T A comparison theorem for systems of two differential equations
%J Differencialʹnye uravneniâ
%D 1977
%P 1338-1340
%V 13
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_7_a25/
%G ru
%F DE_1977_13_7_a25