%0 Journal Article %A M. G. Krasil'nikov %T Reduction to an ordinary Tricomi problem of one of its generalizations relating to a system of equations %J Differencialʹnye uravneniâ %D 1994 %P 336-338 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_2_a18/ %G ru %F DE_1994_30_2_a18