@article{urn:eudml:doc:40073, title = {Periodic solutions of a non coercive Hamiltonian system.}, journal = {Collectanea Mathematica}, volume = {46}, year = {1995}, pages = {255-261}, zbl = {0858.70011}, mrnumber = {MR1380366}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:40073} }
Timoumi, M.; Trad, A. Periodic solutions of a non coercive Hamiltonian system.. Collectanea Mathematica, Tome 46 (1995) pp. 255-261. http://gdmltest.u-ga.fr/item/urn:eudml:doc:40073/