SEBASTIAN, E.; VICTOR, P. A SIR Epidemic Model with Primary Immunodeficiency and Time Delay. Journal of Informatics and Mathematical Sciences, [S. l.], v. 9, n. 3, p. 873–887, 2017. DOI: 10.26713/jims.v9i3.954. Disponível em: http://rgnpublications.com/journals/index.php/jims/article/view/954. Acesso em: 24 nov. 2024.