Akbar, Fadilah, Mardlijah Mardlijah, and Mahmud Yunus. “OPTIMAL CONTROL USING QUADRATIC-QUADRATIC REGULATOR (QQR) FOR MATHEMATICAL MODEL OF CATTLE FOOT AND MOUTH DISEASE (FMD)”. BAREKENG: Jurnal Ilmu Matematika dan Terapan 20, no. 3 (April 8, 2026): 2427-2446. Accessed April 10, 2026. https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/21550.