TY  - JOUR
AU  - V. Ya. Ivrii
TI  - Correctness of the Cauchy problem in Gevrey classes for nonstrictly hyperbolic operators
JO  - Sbornik. Mathematics
PY  - 1975
SP  - 365
EP  - 387
VL  - 25
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/SM_1975_25_3_a2/
LA  - en
ID  - SM_1975_25_3_a2
ER  -