TY  - JOUR
AU  - V. A. Borovikov
TI  - An upper bound for the existence time of the smooth solution of a quasi-linear hyperbolic system
JO  - Doklady Akademii Nauk
PY  - 1971
SP  - 12
EP  - 15
VL  - 201
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1971_201_1_a1/
LA  - ru
ID  - DAN_1971_201_1_a1
ER  -