TY  - JOUR
AU  - V. A. Ginzburg
TI  - The method of orbits and perturbation theory
JO  - Doklady Akademii Nauk
PY  - 1979
SP  - 525
EP  - 528
VL  - 249
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1979_249_3_a1/
LA  - ru
ID  - DAN_1979_249_3_a1
ER  -