LUO, Liping; LUO, Zhenguo; YANG, Liu. Infinitely Many Fast Homoclinic Solutions for Some Second-Order Nonautonomous Systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 3, p. 404–414, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2142. Acesso em: 14 apr. 2025.