HISYAM, NURUL NADIA TASHA, and Norzuria Ibrahim. “Solving SIR Model of HIV Using Implicit Multistep Method of Order Four and Dormand-Prince Method”. Enhanced Knowledge in Sciences and Technology 4, no. 2 (December 17, 2024): 93–102. Accessed April 9, 2026. https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/14351.