@article{EJDE_2000__2000__a207,
     author = {Chen,  Chao-Nien and Tzeng,  Shyuh-yaur},
     title = {Variational and penalization methods for studying connecting orbits of {Hamiltonian} systems},
     journal = {Electronic journal of differential equations},
     year = {2000},
     volume = {2000},
     zbl = {0951.37019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a207/}
}