@article{EJDE_2015__2015__a33,
     author = {Wu,  Dong-Lun and Zhang,  Shiqing},
     title = {Homoclinic orbits at infinity for second-order {Hamiltonian} systems with fixed energy},
     journal = {Electronic journal of differential equations},
     year = {2015},
     volume = {2015},
     zbl = {1351.37234},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a33/}
}