%0 Journal Article
%A N. G. Bulgakov
%T On the question of stability under constantly acting perturbations
%J Differencialʹnye uravneniâ
%D 1969
%P 856-861
%V 5
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_5_a6/
%G ru
%F DE_1969_5_5_a6