“The Development of Order Quantity Optimization Model for Growing Item Considering the Imperfect Quality and Incremental Discount in Three Echelon Supply Chain”. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri 23, no. 2 (October 31, 2021): 101–110. Accessed October 4, 2026. https://jurnalindustri.petra.ac.id/index.php/ind/article/view/23828.