TY  - JOUR
AU  - V. Ya. Ivrii
TI  - Wave fronts of solutions of symmetric pseudodifferential systems
JO  - Doklady Akademii Nauk
PY  - 1977
SP  - 1035
EP  - 1038
VL  - 233
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1977_233_6_a5/
LA  - ru
ID  - DAN_1977_233_6_a5
ER  -