List of Articles Mixed-Integer Nonlinear Programming Open Access Article Abstract Page Full-Text 1 - Data Envelopment Analysis-Discriminant Analysis by imprecise data for more than two groups: apply to the pharmaceutical stock companies Sarah Navidi Mohsen Rostamy-Malkhalifeh 10.30495/ijdea.2023.73900.1198 Open Access Article Abstract Page Full-Text 2 - Multiple Items Supplier Selection, Economic Lot-sizing, and Order Allocation Under Quantity Discount: A Genetic Algorithm Approach Getachew Basa Bonsa Till Becker Abdelkader Kedir 10.22094/joie.2023.1901314.1751