TY  - JOUR
AU  - Yu. B. Orochko
TI  - Finite local propagation rate of a~hyperbolic equation in the problem of selfadjointness of powers of a~second order elliptic differential operator
JO  - Izvestiya. Mathematics 
PY  - 1984
SP  - 277
EP  - 290
VL  - 22
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1984_22_2_a4/
LA  - en
ID  - IM2_1984_22_2_a4
ER  -