MA, T. Periodic solutions of a kind of Liénard equations with two deviating arguments. Topological Methods in Nonlinear Analysis, [S. l.], v. 44, n. 2, p. 337–348, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2014.049. Acesso em: 22 jul. 2024.