Bibi, Muhammed Umar, Saad Ahmed Aliyu, and Idris M Jega. “Analysing Secondary Infections of Coronavirus Disease 2019 across the Geopolitical Zones of Nigeria Using Estimated Time Dependent Reproduction Number”. Sriwijaya Journal of Environment 5, no. 2 (August 31, 2020): 103–110. Accessed November 12, 2026. https://ojs.pps.unsri.ac.id/index.php/ppsunsri/article/view/229.