A. K. Dotia , M. O. Ibrahim , C. N. Ejieji , B. A. Kareem , B. M. Ahmed , B. Ajanaku A. B. Kazeem , and A. O. Lawani. “A Graph-Theoretic Method for TheBasic Reproduction Number in Age-Structured Hepatitis B Model”. NIPES - Journal of Science and Technology Research 1, no. 1 (March 25, 2019). Accessed October 22, 2024. https://journals.nipes.org/index.php/njstr/article/view/32.