Homoclinic solutions for a class of second order non-autonomous systems. Yuan, Rong; Zhang, Ziheng — 2009 Electronic Journal of Differential Equations (EJDE) [electronic only]
Homoclinic solutions for second-order non-autonomous Hamiltonian systems without global Ambrosetti-Rabinowitz conditions. Yuan, Rong; Zhang, Ziheng — 2010 Electronic Journal of Differential Equations (EJDE) [electronic only]