%0 Journal Article %A I. Kurbanov %T Solvability of nonlinear boundary value problems of %J Doklady Akademii Nauk %D 1991 %P 1068-1071 %V 318 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1991_318_5_a9/ %G ru %F DAN_1991_318_5_a9