%0 Journal Article %A V. L. Khatskevich %T Periodic solutions of differential inclusions with monotonous operators %J Differencialʹnye uravneniâ %D 1993 %P 725-727 %V 29 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_4_a20/ %G ru %F DE_1993_29_4_a20