%0 Journal Article %A A. L. Skubachevskii %T Some nonlocal elliptic boundary value problems %J Differencialʹnye uravneniâ %D 1982 %P 1590-1599 %V 18 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_9_a10/ %G ru %F DE_1982_18_9_a10