%0 Journal Article %A V. P. Egorov %T The generalized Neumann–Tricomi problem %J Differencialʹnye uravneniâ %D 1975 %P 2040-2051 %V 11 %N 11 %U http://geodesic.mathdoc.fr/item/DE_1975_11_11_a13/ %G ru %F DE_1975_11_11_a13