%0 Journal Article %A A. V. Kibenko %T On the theory of ordinary differential equations in Banach spaces %J Doklady Akademii Nauk %D 1961 %P 1019-1021 %V 136 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_136_5_a3/ %G ru %F DAN_1961_136_5_a3