Mathematical Model and Optimal Control Strategy for the Dynamics of Hepatitis B Virus Disease Incorporating Treatment Failure and Advanced Stage Compartments. International Journal of Development Mathematics (IJDM), [S. l.], v. 1, n. 2, p. 237–261, 2024. DOI: 10.62054/ijdm/0102.20. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/67.. Acesso em: 23 may. 2026.