Setiawan, Rudy, and Siti Mundari. “Optimal Raw Material Planning To Minimize Out of Stock Costs Using The Material Requirement Planning Method”. JRSI (Jurnal Rekayasa Sistem dan Industri) 13, no. 01 (June 30, 2026): 123–130. Accessed July 27, 2026. https://journals.telkomuniversity.ac.id/jrsi/article/view/11131.