%0 Journal Article %A B. R. Vainberg %T The existence and uniqueness over the entire plane of certain elliptic equations %J Doklady Akademii Nauk %D 1962 %P 14-16 %V 142 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_142_1_a2/ %G ru %F DAN_1962_142_1_a2