@article{EJDE_2000__2000__a61,
     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},
     publisher = {mathdoc},
     volume = {2000},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a61/}
}