AFOLABI, Ayodeji Sunday; RIDWAN, Abdulwahab. Mathematical Modeling of COVID-19: An Optimal Control Approach. Jambura Journal of Biomathematics (JJBM), Gorontalo, Indonesia, v. 7, n. 1, p. 1–27, 2026. DOI: 10.37905/jjbm.v7i1.2. Disponível em: https://jjbm.fmipa.ung.ac.id/index.php/ejournal/article/view/2. Acesso em: 24 apr. 2026.