YUSUF, T. T. On Global Stability of Disease-Free Equilibrium in Epidemiological Models. European Journal of Mathematics and Statistics, [S. l.], v. 2, n. 3, p. 37–42, 2021. DOI: 10.24018/ejmath.2021.2.3.21. Disponível em: https://ej-math.org/index.php/ejmath/article/view/21. Acesso em: 10 dec. 2024.