BELAIRE-FRANCH, J.; CONTRERAS, D. Recurrence Plots in Nonlinear Time Series Analysis: Free Software. Journal of Statistical Software, [S. l.], v. 7, n. 9, p. 1–18, 2002. DOI: 10.18637/jss.v007.i09. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v007i09. Acesso em: 3 dec. 2022.