TY - JOUR AU - Wu, Dong-Lun AU - Zhang, Shiqing TI - Homoclinic orbits at infinity for second-order Hamiltonian systems with fixed energy JO - Electronic Journal of Differential Equations PY - 2015 VL - 2015 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a33/ LA - en ID - EJDE_2015__2015__a33 ER -