%0 Journal Article %A Yu. Ya. Belov %T On a system of nonlinear operator equations in a Banach space %J Doklady Akademii Nauk %D 1978 %P 557-560 %V 243 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_243_3_a1/ %G ru %F DAN_1978_243_3_a1