’, S. (1) “RUMUSAN PERSEDIAAN PENGAMAN YANG FLEKSIBEL (FLEXIBLE SAFETY STOCK FORMULA)”, SISTEM Jurnal Ilmu Ilmu Teknik, 11(2), pp. 12-20. Available at: https://sistem.wisnuwardhana.ac.id/index.php/sistem/article/view/2 (Accessed: 7September2025).