Susanto, Sigit. “Natural Rubber Inventory System Using the EPQ and Fuzzy EPQ Models With Sensitivity Analysis”. Matrik : Jurnal Manajemen dan Teknik Industri Produksi 27, no. 1 (September 30, 2026): 31–42. Accessed September 30, 2026. https://journal.umg.ac.id/index.php/matriks/article/view/12379.