TY  - JOUR
AU  - V. M. Govorov
AU  - È. K. Safiev
TI  - Uniqueness of the classical solution of a mixed problem for a hyperbolic equation with unbounded lower coefficients
JO  - Differencialʹnye uravneniâ
PY  - 1990
SP  - 154
EP  - 157
VL  - 26
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1990_26_1_a18/
LA  - ru
ID  - DE_1990_26_1_a18
ER  -