TY  - JOUR
AU  - D. Bazarov
TI  - An analogue of the Frankl's problem for a three-dimensional equation of mixed type
JO  - Doklady Akademii Nauk
PY  - 1990
SP  - 169
EP  - 171
VL  - 314
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1990_314_1_a40/
LA  - ru
ID  - DAN_1990_314_1_a40
ER  -