@article{AIHPC_1989__6_1_73_0,
     author = {Benci, V. and Giannoni, F.},
     title = {Periodic bounce trajectories with a low number of bounce points},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {73--93},
     year = {1989},
     publisher = {Gauthier-Villars},
     volume = {6},
     number = {1},
     mrnumber = {984148},
     zbl = {0667.34054},
     language = {en},
     url = {https://www.numdam.org/item/AIHPC_1989__6_1_73_0/}
}