%0 Journal Article %A A. A. Kerefov %T Nonlocal boundary value problems for parabolic equations %J Differencialʹnye uravneniâ %D 1979 %P 74-78 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_1_a9/ %G ru %F DE_1979_15_1_a9