List of Articles Nonlinear Programming Open Access Article Abstract Page Full-Text 1 - Effects of Probability Function on the Performance of Stochastic Programming Mohammad Ebrahim Karbaschi Mohammad Reza Banan 10.22094/joie.2017.567.63 20.1001.1.22519904.2018.11.1.5.5 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 Open Access Article Abstract Page Full-Text 3 - A Hybrid Meta-Heuristic Method to Optimize Bi-Objective Single Period Newsboy Problem with Fuzzy Cost and Incremental Discount Ata Allah Taleizadeh Seyed Taghi Akhavan Niaki