%0 Journal Article
%A S. N. Vassilyev
%T The comparison method in systems analysis. IV
%J Differencialʹnye uravneniâ
%D 1982
%P 938-947
%V 18
%N 6
%U http://geodesic.mathdoc.fr/item/DE_1982_18_6_a2/
%G ru
%F DE_1982_18_6_a2