TY  - JOUR
AU  - K. B. Sabitov
AU  - A. A. Karamova
TI  - Spectral properties of solutions of the Tricomi problem for equations of mixed type with two lines of degeneracy, and their applications
JO  - Izvestiya. Mathematics 
PY  - 2001
SP  - 769
EP  - 785
VL  - 65
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2001_65_4_a7/
LA  - en
ID  - IM2_2001_65_4_a7
ER  -