MAMO, Tesfaye Tefera; MEKONNEN, Temesgen Tibebu. An Age Structure Mathematical Model Analysis on the Dynamics of Chronic and Hyper Toxic Forms of Hepatitis B Virus by SVEA_1 A_2 CR Model with Vaccination Intervention Control Strategy in Ethiopia. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 50, n. 1, p. 106–136, 2020. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/10714. Acesso em: 23 dec. 2025.