%0 Journal Article %A P. G. Aizengendler %A M. M. Vainberg %T The branching of periodic solutions of autonomous systems and of differential equations in Banach spaces %J Doklady Akademii Nauk %D 1967 %P 9-12 %V 176 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_176_1_a0/ %G ru %F DAN_1967_176_1_a0