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 (Mar. 2019).