%0 Journal Article %A I. G. Krosko %T Sufficient conditions for stability and instability in the sense of V.\,I.~Zubov of invariant manifolds of differential systems %J Differencialʹnye uravneniâ %D 1973 %P 1527-1529 %V 9 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_8_a18/ %G ru %F DE_1973_9_8_a18