Tjahjana, R. Heru, and Sutimin Sutimin. “Optimal Control Approach For HIV-1 Infection in CD4+T Cells With RTI and PI Treatments”. (IJCSAM) International Journal of Computing Science and Applied Mathematics 6, no. 2 (August 15, 2020): 42–45. Accessed January 30, 2026. https://journal.its.ac.id/index.php/ijcsam/article/view/4568.