Matadi, Maba Boniface. “Investigating Lie Group Symmetry and Analyzing Stability in Mathe-Matical Modeling of the HIV Epidemic”. Contemporary Mathematics 6, no. 6 (November 28, 2025): 8649–8666. Accessed January 1, 2026. https://ojs.wiserpub.com/index.php/CM/article/view/7223.