TY  - JOUR
AU  - G. M. Kagan
TI  - On a class of singular problems satisfying Huygens principle
JO  - Doklady Akademii Nauk
PY  - 1981
SP  - 1307
EP  - 1311
VL  - 256
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1981_256_6_a5/
LA  - ru
ID  - DAN_1981_256_6_a5
ER  -