List of Articles Integer programming Open Access Article Abstract Page Full-Text 1 - The project portfolio selection and scheduling problem: mathematical model and algorithms Bahman Naderi 20.1001.1.22519904.2013.6.13.7.6 Open Access Article Abstract Page Full-Text 2 - A Multi-Objective Fuzzy Approach to Closed-Loop Supply Chain Network Design with Regard to Dynamic Pricing Soroush Avakh Darestani Faranak Pourasadollah 10.22094/joie.2018.476.0 20.1001.1.22519904.2019.12.1.15.2 Open Access Article Abstract Page Full-Text 3 - Centralized Supply Chain Network Ddesign: Monopoly, Duopoly, and Ooligopoly Competitions under Uncertainty kaveh Fahimi Seyed Mohammad Seyed Hosseini Ahmad Makui 10.22094/joie.2017.685.1439 20.1001.1.22519904.2018.11.2.5.7 Open Access Article Abstract Page Full-Text 4 - Optimization of Inventory Controlling System Using Integrated Seasonal Forecasting and Integer Programming Hagazi Heniey Kidane Gebrehiwot Tsegay Desta Leake Gebrehiwot 10.22094/joie.2021.1895036.1732 20.1001.1.22519904.2022.15.1.5.3 Open Access Article Abstract Page Full-Text 5 - A Mixed Integer Programming Formulation for the Heterogeneous Fixed Fleet Open Vehicle Routing Problem Majid Yousefikhoshbakht Frazad Didehvar Farhad Rahmati 20.1001.1.22519904.2015.8.18.4.7