Usdianto, Dwitama, and Ririn Setiyowati. “MATHEMATICAL MODEL OF RICE COMMODITY SUPPLY CHAIN IN INDONESIA”. BAREKENG: Jurnal Ilmu Matematika dan Terapan 17, no. 2 (June 11, 2023): 1139-1148. Accessed July 3, 2024. https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/8324.