TINAW TILAHUN ASMAMAW; GEBREARGAWI, Kiros. A Mathematical Model for the Transmission Dynamics of COVID-19 Pandemic Considering Protected and Hospitalized with Optimal Control. East African Journal of Biophysical and Computational Sciences, Ethiopia, v. 5, n. 2, p. 58–86, 2025. Disponível em: https://journals.hu.edu.et/hu-journals/index.php/eajbcs/article/view/694.. Acesso em: 6 feb. 2026.