%0 Journal Article %A Z. D. Dublya %T Boundary value problems for equations of the type of Humbert's equation %J Differencialʹnye uravneniâ %D 1976 %P 36-40 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_1_a4/ %G ru %F DE_1976_12_1_a4