TY  - JOUR
AU  - V. A. Vassiliev
TI  - Sharpness and the local Petrovskii condition for strictly hyperbolic operators with constant coefficients
JO  - Izvestiya. Mathematics 
PY  - 1987
SP  - 233
EP  - 273
VL  - 28
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1987_28_2_a1/
LA  - en
ID  - IM2_1987_28_2_a1
ER  -