%0 Journal Article %A V. V. Zaitsev %T A criterion for the existence of and estimates for invariant bounded sets of a system of autonomous differential equations %J Differencialʹnye uravneniâ %D 1993 %P 766-772 %V 29 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_5_a4/ %G ru %F DE_1993_29_5_a4