TY  - JOUR
AU  - K. B. Sabitov
AU  - R. M. Safina
TI  - The first boundary-value problem for an equation of mixed type with a~singular coefficient
JO  - Izvestiya. Mathematics 
PY  - 2018
SP  - 318
EP  - 350
VL  - 82
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2018_82_2_a3/
LA  - en
ID  - IM2_2018_82_2_a3
ER  -