%0 Journal Article
%A A. V. Dragilev
%T A certain theorem and a problem from the qualitative theory of differential equations
%J Differencialʹnye uravneniâ
%D 1965
%P 1679-1681
%V 1
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1965_1_12_a14/
%G ru
%F DE_1965_1_12_a14