TY  - JOUR
AU  - A. V. Bitsadze
TI  - On the Tricomi problem for nonlinear equations of mixed type
JO  - Doklady Akademii Nauk
PY  - 1977
SP  - 733
EP  - 736
VL  - 235
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1977_235_4_a1/
LA  - ru
ID  - DAN_1977_235_4_a1
ER  -