TY  - JOUR
AU  - Ya. A. Roitberg
TI  - Boundary and mixed problems for general hyperbolic systems in a complete scale of spaces of Sobolev type
JO  - Doklady Akademii Nauk
PY  - 1991
SP  - 820
EP  - 824
VL  - 318
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1991_318_4_a11/
LA  - ru
ID  - DAN_1991_318_4_a11
ER  -