Idowu, Oluwatobi Kabir, and Adedapo Chris Loyinmi. “Qualitative Analysis of the Transmission Dynamics and Optimal Control of Covid-19”. EDUCATUM Journal of Science, Mathematics and Technology, vol. 10, no. 1, June 2023, pp. 54-70, https://doi.org/10.37134/ejsmt.vol10.1.7.2023.