@article{EJDE_1994__1994_1_a0,
     author = {Korman,  Philip and Lazer,  Alan C.},
     title = {Homoclinic orbits for a class of symmetric {Hamiltonian} systems},
     journal = {Electronic journal of differential equations},
     year = {1994},
     volume = {1994},
     number = {1},
     zbl = {0788.34042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_1994__1994_1_a0/}
}