@article{AIHPC_1998__15_2_233_0,
     author = {Ambrosetti, Antonio and Badiale, Marino},
     title = {Homoclinics : {Poincar\'e-Melnikov} type results via a variational approach},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {233--252},
     publisher = {Gauthier-Villars},
     volume = {15},
     number = {2},
     year = {1998},
     mrnumber = {1614571},
     zbl = {1004.37043},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1998__15_2_233_0/}
}