TY  - JOUR
AU  - V. M. Petkov
TI  - On the Cauchy problem for first-order hyperbolic systems with multiple characteristics
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 795
EP  - 797
VL  - 209
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_209_4_a10/
LA  - ru
ID  - DAN_1973_209_4_a10
ER  -