@article{AIHPC_1990__7_5_427_0,
     author = {Tanaka, Kazunaga},
     title = {Homoclinic orbits for a singular second order hamiltonian system},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {427--438},
     publisher = {Gauthier-Villars},
     volume = {7},
     number = {5},
     year = {1990},
     mrnumber = {1138531},
     zbl = {0712.58026},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPC_1990__7_5_427_0/}
}