List of Articles Mojtaba Enayati Article 1 - Scheduling on flexible flow shop with cost-related objective function considering outsourcing options 20.1001.1.22519904.2021.14.2.5.8 10.22094/joie.2020.1873983.1674 Mojtaba Enayati Ebrahim Asadi-Gangraj Mohammad Mahdi Paydar Journal of Optimization in Industrial Engineering , Issue 31 , Year , Autumn 2021