%0 Journal Article %A R. Gabasov %A M. L. Gusakova %T A maximum principle for general discrete systems %J Differencialʹnye uravneniâ %D 1971 %P 1581-1590 %V 7 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1971_7_9_a4/ %G ru %F DE_1971_7_9_a4