%0 Journal Article %A Wu, Dong-Lun %A Zhang, Shiqing %T Homoclinic orbits at infinity for second-order Hamiltonian systems with fixed energy %J Electronic Journal of Differential Equations %D 2015 %V 2015 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a33/ %G en %F EJDE_2015__2015__a33