%0 Journal Article %A T. V. Chekmarev %T The Tricomi problem in a domain bounded by arcs of characteristics and by half lines which are perpendicular to the line of degeneracy %J Differencialʹnye uravneniâ %D 1983 %P 1965-1971 %V 19 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_11_a18/ %G ru %F DE_1983_19_11_a18