A. K. Dotia , M. O. Ibrahim , C. N. Ejieji , B. A. Kareem , B. M. Ahmed , B. Ajanaku A. B. Kazeem , and A. O. Lawani. 2019. “Optimal Test Strategies for HBV-HIV Co-Infection Model”. NIPES - Journal of Science and Technology Research 1 (1). https://journals.nipes.org/index.php/njstr/article/view/33.