Janan, Tuhfatul. “On Quinary Semiring and Properties of Its Special Subsets”. Jurnal Matematika, Statistika dan Komputasi 21, no. 1 (September 15, 2024): 78–87. Accessed December 22, 2024. https://journal.unhas.ac.id/index.php/jmsk/article/view/35615.