List of Articles Mathematical Modeling Open Access Article Abstract Page Full-Text 1 - A Hybrid Mehta-Heuristic algorithm for optimization location-routing problem of facilities in four echelon supply chain Hamidreza Mohamadi Reza Ehtesham Rasi Ali Mohtashami 10.30495/jiei.2020.678787 20.1001.1.17355702.2020.16.4.2.1 Open Access Article Abstract Page Full-Text 2 - A modified NSGA-II solution for a new multi-objective hub maximal covering problem under uncertain shipments Amir Ebrahimi Zade Ahmad Sadegheih Mohammad Mehdi Lotfi Open Access Article Abstract Page Full-Text 3 - A reverse logistics chain mathematical model for a sustainable production system of perishable goods based on demand optimization Saeed Tavakkoli Moghaddam Mehrdad Javadi Seyyed Mohammad Hadji Molana Open Access Article Abstract Page Full-Text 4 - Evaluating different scenarios for Tradable Green Certificates by game theory approaches Meysam Ghaffari Ashkan Hafezalkotob Open Access Article Abstract Page Full-Text 5 - Assembly line performance and modeling Arun B. Rane Vivek K. Sunnapwar Open Access Article Abstract Page Full-Text 6 - A new binary model for university examination timetabling: a case study Alireza Rashidi Komijan Mehrdad Nouri Koupaei