List of Articles Efficiency Interval Open Access Article Abstract Page Full-Text 1 - Decomposition of efficiency in a network Bijan Rahmani Parchikolaei Open Access Article Abstract Page Full-Text 2 - A Note On Dual Models Of Interval DEA and Its Extension To Interval Data H. Azizi A. Amirteimoori S. Kordrostami Open Access Article Abstract Page Full-Text 3 - 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 4 - Supplier Selection Based on Optimistic and Pessimistic Perspectives Hosen Azizi Alireza Amir Teymori Reza Farzipour Samen Open Access Article Abstract Page Full-Text 5 - Measuring the overall performances of decision-making units in the presence of imprecise data Hossein Azizi Alireza Bahari Rasul Jahed