PATHAK, S.; MAITI, A.; SAMANTA, G. P. P. Rich dynamics of an SIR epidemic model. Nonlinear Analysis: Modelling and Control, [S. l.], v. 15, n. 1, p. 71–81, 2010. DOI: 10.15388/NA.2010.15.1.14365. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/14365.. Acesso em: 16 may. 2024.