Akbar, F., Mardlijah, M., & Yunus, M. (2026). OPTIMAL CONTROL USING QUADRATIC-QUADRATIC REGULATOR (QQR) FOR MATHEMATICAL MODEL OF CATTLE FOOT AND MOUTH DISEASE (FMD). BAREKENG: Jurnal Ilmu Matematika Dan Terapan, 20(3), 2427-2446. https://doi.org/10.30598/barekengvol20iss3pp2427-2446