@article{urn:eudml:doc:39529,
title = {Multiple periodic solutions of some forced hamiltonian systems and the generalized saddle point theorem.},
journal = {Collectanea Mathematica},
volume = {43},
year = {1992},
pages = {217-224},
zbl = {0795.58041},
mrnumber = {MR1252731},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39529}
}
Timoumi, Mohsen. Multiple periodic solutions of some forced hamiltonian systems and the generalized saddle point theorem.. Collectanea Mathematica, Tome 43 (1992) pp. 217-224. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39529/