TY  - JOUR
AU  - G. D. Karatoprakliev
TI  - A certain class of equations of mixed type
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 199
EP  - 205
VL  - 5
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_1_a15/
LA  - ru
ID  - DE_1969_5_1_a15
ER  -