EDET, U.; ETUKUDO, I. Stability Analysis of the Equilibria of a Simple Compartmental Model for Covid-19 Transmission. World Journal of Applied Science & Technology, [S. l.], v. 13, n. 1, p. 63–72, 2022. DOI: 10.4314/wojast.v13i1. Disponível em: https://www.ajol.info/index.php/wojast/article/view/227431. Acesso em: 11 oct. 2026.