فهرس المقالات Abdelkader Kedir المقاله 1 - Multiple Items Supplier Selection, Economic Lot-sizing, and Order Allocation Under Quantity Discount: A Genetic Algorithm Approach 10.22094/joie.2023.1901314.1751 Getachew Basa Bonsa Till Becker Abdelkader Kedir Journal of Optimization in Industrial Engineering , العدد 35 , السنة 16 , پاییز 2023