%0 Journal Article %A G. N. Agaev %T The solvability of nonlinear operator equations in a Banach space %J Doklady Akademii Nauk %D 1967 %P 1239-1242 %V 174 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_174_6_a0/ %G ru %F DAN_1967_174_6_a0