TY  - JOUR
AU  - V. A. Vassiliev
TI  - Geometry of local lacunae of hyperbolic operators with constant coefficients
JO  - Sbornik. Mathematics
PY  - 1993
SP  - 111
EP  - 123
VL  - 75
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1993_75_1_a5/
LA  - en
ID  - SM_1993_75_1_a5
ER  -