Unconditionally Stable Numerical Scheme to Study the Dynamics of Hepatitis B Disease. Punjab University Journal of Mathematics, [S. l.], v. 49, n. 3, p. 92–111, 2017. Disponível em: https://pujm.pu.edu.pk/index.php/pujm/article/view/110. Acesso em: 29 jun. 2025.