TY  - JOUR
AU  - G. G. Kazaryan
TI  - Hyperbolic operators with a given higher-order part
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 1059
EP  - 1069
VL  - 15
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_6_a11/
LA  - ru
ID  - DE_1979_15_6_a11
ER  -