%0 Journal Article %A A. A. Kerefov %T Certain boundary value problems for mixed-parabolic equations %J Differencialʹnye uravneniâ %D 1975 %P 75-84 %V 11 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_1_a9/ %G ru %F DE_1975_11_1_a9