TY  - JOUR
AU  - L. A. Zhelezovskaya
AU  - S. E. Zhelezovsky
AU  - V. Ph. Kirichenko
AU  - V. A. Krys'ko
TI  - Symmetrization of an operator of a boundary value problem for a hyperbolic equation
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 523
EP  - 525
VL  - 25
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_3_a18/
LA  - ru
ID  - DE_1989_25_3_a18
ER  -