List of Articles بازهی کارآیی Open Access Article Abstract Page Full-Text 1 - Evaluating the performances of decision-making units based on the optimistic and pessimistic points of view Hossein Azizi Maziar Salahi Open Access Article Abstract Page Full-Text 2 - Supplier Selection Based on Optimistic and Pessimistic Perspectives Hosen Azizi Alireza Amir Teymori Reza Farzipour Samen