XIANG, T.; YUAN, R. Existence of periodic solutions for $p$-Laplacian neutral functional equation with multiple deviating arguments. Topological Methods in Nonlinear Analysis, [S. l.], v. 37, n. 2, p. 235–258, 2011. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2011.013. Acesso em: 19 apr. 2024.