List of Articles efficiency analysis Open Access Article Abstract Page Full-Text 1 - Implementing Fuzzy DEA into the PEM Model for Performance Evaluation of Project-based Organizations: A case study Owais Torabi Mohammad Milad Ahmadi Ruhollah Tavallaei 20.1001.1.25885723.2021.13.4.5.4 Open Access Article Abstract Page Full-Text 2 - Using lexicographic parametric programming for identifying efficient hyperpalnes in DEA Farhad Hosseinzadeh Lotfi F. Rezai Balf A. Taghavi