Silitonga, Roland Y. H., and Ester E. L. Br Sembiring. “Inventory Policy for Retail Stores: A Multi-Item EOQ Model Considering Permissible Delay in Payment and Limited Warehouse Capacity”. Jurnal Optimasi Sistem Industri 21, no. 1 (May 31, 2022): 28–37. Accessed January 22, 2025. http://josi.ft.unand.ac.id/index.php/josi/article/view/122.