%0 Journal Article %A V. N. Vragov %T A mixed problem for a certain class of second order hyperbolic-parabolic equations %J Differencialʹnye uravneniâ %D 1976 %P 24-31 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_1_a2/ %G ru %F DE_1976_12_1_a2