List of Articles Variable neighborhood search Open Access Article Abstract Page Full-Text 1 - Bi-objective mathematical modeling for a green last-mile transportation network with an automated parcel locker Amir-Hossein Zahedi-Anaraki Reza Tavakkoli-Moghaddam Ramin Sadeghian Open Access Article Abstract Page Full-Text 2 - Modeling and scheduling no-idle hybrid flow shop problems Mehdi Yazdani Bahman Naderi 10.22094/joie.2016.261 Open Access Article Abstract Page Full-Text 3 - A Mathematical Model for Multiple-Load AGVs in Tandem Layout Behnam Rahimikelarijani Mohammad Saidi-Mehrabad Farnaz Barzinpour 10.22094/joie.2018.537.37 Open Access Article Abstract Page Full-Text 4 - Hybrid meta-heuristic algorithm for multi-objective portfolio optimization by fuzzy programming Javad Behnamian Mohammad Moshrefi