Fithri, Prima, Alizar Hasan, and Fadhita Maisa Asri. 2019. “Analysis of Inventory Control by Using Economic Order Quantity Model – A Case Study in PT Semen Padang”. Jurnal Optimasi Sistem Industri 18 (2):116–124. http://josi.ft.unand.ac.id/index.php/josi/article/view/162.