TY  - JOUR
AU  - S. S. Kharibegashvili
TI  - The characteristic problem for second-order hyperbolic systems with constant coefficients
JO  - Differencialʹnye uravneniâ
PY  - 1978
SP  - 123
EP  - 135
VL  - 14
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1978_14_1_a12/
LA  - ru
ID  - DE_1978_14_1_a12
ER  -