%0 Journal Article
%A K. B. Sabitov
%A G. G. Sharafutdinova
%T The Tricomi Problem for a Mixed Type Equation with Two Orthogonal Degeneration Lines
%J Differencialʹnye uravneniâ
%D 2003
%P 788-800
%V 39
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_2003_39_6_a7/
%G ru
%F DE_2003_39_6_a7