%0 Journal Article %A G. A. Iosif'yan %A O. A. Oleinik %T An analogue of the Saint-Venant principle for a second order elliptic equation, and the uniqueness of the solutions of boundary value problems in unbounded domains %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1976 %V 31 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1976_31_4_a18/ %G ru %F RM_1976_31_4_a18