%0 Journal Article %A D. M. Dovletov %T A nonlocal boundary value problem of the first kind in a differential and a difference treatment %J Differencialʹnye uravneniâ %D 1989 %P 1297-1307 %V 25 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1989_25_8_a1/ %G ru %F DE_1989_25_8_a1