TY  - JOUR
AU  - B. S. Bardin
TI  - On nonlinear oscillations of Hamiltonian system in case of fourth order resonance
JO  - Russian journal of nonlinear dynamics
PY  - 2007
SP  - 57
EP  - 74
VL  - 3
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2007_3_1_a3/
LA  - ru
ID  - ND_2007_3_1_a3
ER  -