List of Articles Amir Aydin Atashi Abkenar Article 1 - Fuzzy Mathematical Model For A Lot-Sizing Problem In Closed-Loop Supply Chain 20.1001.1.22519904.2018.11.1.10.0 10.22094/joie.2018.268 Amir Fatehi Kivi Amir aydin Atashi Abkenar Hossin alipour Journal of Optimization in Industrial Engineering , Issue 23 , Year , Spring 2018