%0 Journal Article %A B. S. Kalitin %T Pseudostability of closed invariant sets %J Differencialʹnye uravneniâ %D 1986 %P 187-193 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_2_a0/ %G ru %F DE_1986_22_2_a0