TY  - JOUR
AU  - M. M. Lavrent'ev
TI  - Evolution equations and the Goursat problem for a telegraph
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 38
EP  - 41
VL  - 308
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_308_1_a7/
LA  - ru
ID  - DAN_1989_308_1_a7
ER  -