%0 Journal Article %A G. D. Karatoprakliev %T Equations of mixed type and degenerate hyperbolic equations in multidimensional domains %J Differencialʹnye uravneniâ %D 1972 %P 55-67 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_1_a6/ %G ru %F DE_1972_8_1_a6