Oryza Safitri, and Mardlijah. “ontrol ptimum ada odel rey-redator engan emanenan ada kan rey an kan redator”. Limits: Journal of Mathematics and Its Applications 16, no. 1 (August 15, 2019): 39–49. ccessed December 6, 2025. https://journal.its.ac.id/index.php/limits/article/view/5397.