%0 Journal Article
%A I. G. Petrovskaya
%T On the question of the classification of closed invariant sets of dynamical systems
%J Differencialʹnye uravneniâ
%D 1986
%P 426-430
%V 22
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1986_22_3_a7/
%G ru
%F DE_1986_22_3_a7