TY  - JOUR
AU  - A. P. Markeev
TI  - On the Birkhoff transformation in the case of complete degeneracy of the quadratic part of the Hamiltonian
JO  - Russian journal of nonlinear dynamics
PY  - 2015
SP  - 343
EP  - 352
VL  - 11
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2015_11_2_a9/
LA  - ru
ID  - ND_2015_11_2_a9
ER  -