TY  - JOUR
AU  - S. A. Gal'pern
AU  - V. E. Kondrashov
TI  - The Cauchy problem for a differential operator decomposing into wave factors
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 757
EP  - 759
VL  - 154
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_154_4_a2/
LA  - ru
ID  - DAN_1964_154_4_a2
ER  -