Eze, F.C., and M.U. Uwaezuoke. “Age-Structured Deterministic Model for the Dynamics of Hepatitis B Virus in Nigeria Incorporating Vertical and Horizontal Transmission”. International Journal of Mathematical Analysis and Modelling 8, no. 2 (January 3, 2026). Accessed July 28, 2026. https://tnsmb.org/journal/index.php/ijmam/article/view/254.