Ayamah, R. ., Z. . Puotier, and G. K. . Awuitor. “Mathematical Evaluation of Antiretroviral Therapy Effect in Ghana”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 54, no. 4, Nov. 2020, pp. 329-44, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/11951.