WANG, J.; XU, J.; ZHANG, F. Infinitely many homoclinic orbits for supperlinear Hamiltonian systems. Topological Methods in Nonlinear Analysis, [S. l.], v. 39, n. 1, p. 1–22, 2012. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2012.001. Acesso em: 22 jul. 2024.