Hasnani, Fitriana, and Nikken Puspita. 2022. “IDEAL TAK TEREDUKSI KUAT ATAS SEMIRING KOMUTATIF”. Pattimura Proceeding: Conference of Science and Technology 2 (1), 21-26. https://ojs3.unpatti.ac.id/index.php/pcst/article/view/5633.