%0 Journal Article
%A N. G. Bulgakov
%T On the question of the stability of the solutions of second order systems in critical cases
%J Differencialʹnye uravneniâ
%D 1978
%P 543-545
%V 14
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1978_14_3_a18/
%G ru
%F DE_1978_14_3_a18