%0 Journal Article %A T. B. Karabasov %T A nonlocal boundary value problem for the Laplace equation %J Differencialʹnye uravneniâ %D 1983 %P 171-174 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_1_a25/ %G ru %F DE_1983_19_1_a25