@article{PDML_1984___3B_A6_0,
     author = {Grangier, G\'erard},
     title = {4 {Recherche} d'orbites p\'eriodiques d'un champ hamiltonien associ\'e \`a une structure symplectique non standard},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {65--78},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     number = {3B},
     year = {1984},
     mrnumber = {755015},
     zbl = {0595.58038},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1984___3B_A6_0/}
}