TY  - JOUR
AU  - V. E. Chernyshev
TI  - Closed trajectories in the neighborhood of an invariant torus
JO  - Differencialʹnye uravneniâ
PY  - 1980
SP  - 374
EP  - 376
VL  - 16
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1980_16_2_a23/
LA  - ru
ID  - DE_1980_16_2_a23
ER  -