@article{02216038,
title = {Bifurcation of periodic orbits of time dependent Hamiltonian systems on symplectic manifolds.},
journal = {Rendiconti del Seminario Matematico},
volume = {57},
year = {1999},
pages = {161-173},
zbl = {1072.37040},
language = {en},
url = {http://dml.mathdoc.fr/item/02216038}
}
Ciriza, Eleonora. Bifurcation of periodic orbits of time dependent Hamiltonian systems on symplectic manifolds.. Rendiconti del Seminario Matematico, Tome 57 (1999) pp. 161-173. http://gdmltest.u-ga.fr/item/02216038/