TY  - JOUR
AU  - G. L. Chernyshev
TI  - On the Friedrichs--Lewy inequality for $B$-hyperbolic operators
JO  - Doklady Akademii Nauk
PY  - 1971
SP  - 1295
EP  - 1298
VL  - 201
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1971_201_6_a7/
LA  - ru
ID  - DAN_1971_201_6_a7
ER  -