%0 Journal Article %A V. M. Matrosov %T The comparison principle with a vector-valued Ljapunov function.~I %J Differencialʹnye uravneniâ %D 1968 %P 1374-1386 %V 4 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_8_a1/ %G ru %F DE_1968_4_8_a1