Yu, Jonas, and G.A. Widyadana. “A Modeling of Multi-Echelon Suppliers’ Chain for Deteriorating Items”. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri 13, no. 2 (January 24, 2012): 59-64. Accessed May 2, 2024. https://jurnalindustri.petra.ac.id/index.php/ind/article/view/18297.