%0 Journal Article %A L. A. Bagirov %T Elliptic equations in unbounded domains %J Sbornik. Mathematics %D 1971 %P 121-140 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1971_15_1_a6/ %G en %F SM_1971_15_1_a6