%0 Journal Article
%A A. A. Shestakov
%T Tests for the instability of a set with respect to a nonautonomous differential system
%J Differencialʹnye uravneniâ
%D 1977
%P 958-960
%V 13
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_5_a22/
%G ru
%F DE_1977_13_5_a22