TY  - JOUR
AU  - V. G. Romanov
AU  - V. G. Yakhno
TI  - Linearized statement of the problem of determining hyperbolic operators
JO  - Matematičeskie zametki
PY  - 1980
SP  - 391
EP  - 400
VL  - 28
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1980_28_3_a6/
LA  - ru
ID  - MZM_1980_28_3_a6
ER  -