%0 Journal Article
%A I. N. Blinov
%T A certain class of improper systems
%J Differencialʹnye uravneniâ
%D 1968
%P 949-951
%V 4
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1968_4_5_a21/
%G ru
%F DE_1968_4_5_a21