TY  - JOUR
AU  - Ya. V. Kurylev
TI  - On the Holmgren--John uniqueness theorem for the wave equation with piecewise analytic coefficients
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1992
SP  - 113
EP  - 136
VL  - 203
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1992_203_a9/
LA  - ru
ID  - ZNSL_1992_203_a9
ER  -