%0 Journal Article %A A. K. Gushchin %A V. P. Mikhailov %T On the unique solvability of nonlocal problems for an elliptic %J Doklady Akademii Nauk %D 1996 %P 7-8 %V 351 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1996_351_1_a0/ %G ru %F DAN_1996_351_1_a0