TY  - JOUR
AU  - Viktor L. Ginzburg
TI  - On the existence and non-existence of closed trajectories for some Hamiltonian flows.
JO  - Mathematische Zeitschrift
PY  - 1996
SP  - 397
EP  - 410
VL  - 223
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174927/
ID  - MZ_1996__223_3_174927
ER  -