TY  - JOUR
AU  - V. A. Il'in
TI  - Proof of uniqueness and membership in $W^1_2$ of the classical solution of a mixed problem for a self-adjoint hyperbolic equation
JO  - Matematičeskie zametki
PY  - 1975
SP  - 91
EP  - 101
VL  - 17
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1975_17_1_a10/
LA  - ru
ID  - MZM_1975_17_1_a10
ER  -