TY  - JOUR
AU  - V. N. Shuhman
TI  - The Cauchy problem for not strictly hyperbolic equations
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 551
EP  - 553
VL  - 193
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_193_3_a14/
LA  - ru
ID  - DAN_1970_193_3_a14
ER  -