@article{01605719,
title = {Periodic solutions for a class of non-coercive Hamiltonian systems.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2001},
year = {2001},
zbl = {1029.34032},
language = {en},
url = {http://dml.mathdoc.fr/item/01605719}
}
Boughariou, Morched. Periodic solutions for a class of non-coercive Hamiltonian systems.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2001 (2001) . http://gdmltest.u-ga.fr/item/01605719/