TY  - JOUR
AU  - B. B. Kadomtsev
TI  - The invariance principle for a homogeneous medium of arbitrary shape
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 831
EP  - 834
VL  - 112
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_112_5_a13/
LA  - ru
ID  - DAN_1957_112_5_a13
ER  -