%0 Journal Article %A G. V. Arzhanov %T Solvability of a type of non-linear boundary-value problem %J Doklady Akademii Nauk %D 1961 %P 267-270 %V 139 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a1/ %G ru %F DAN_1961_139_2_a1