%0 Journal Article %A K. Kordunyanu %T On the existence of bounded solutions for some non-linear differential systems %J Doklady Akademii Nauk %D 1960 %P 735-737 %V 131 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a4/ %G ru %F DAN_1960_131_4_a4