%0 Journal Article
%A K. B. Sabitov
%A A. A. Karamova
%T Spectral properties of solutions of the Tricomi problem for equations of mixed type with two lines of degeneracy, and their applications
%J Izvestiya. Mathematics 
%D 2001
%P 769-785
%V 65
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2001_65_4_a7/
%G en
%F IM2_2001_65_4_a7