@article{01125956,
title = {On the prescribed-period problem for autonomous Hamiltonian systems.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {1998},
year = {1998},
zbl = {0891.58014},
language = {en},
url = {http://dml.mathdoc.fr/item/01125956}
}
Zevin, A.A. On the prescribed-period problem for autonomous Hamiltonian systems.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 1998 (1998) . http://gdmltest.u-ga.fr/item/01125956/