List of Articles Hyperplane Open Access Article Abstract Page Full-Text 1 - finding the defining hyperplanes of production possibility set with variable returns to scale using the linear independent vectors N. Rafati-‎Maleki M. Rostamy-Malkhalifeh Open Access Article Abstract Page Full-Text 2 - Efficiency Analysis Based on Separating Hyperplanes for Improving Discrimination among DMUs M. Mohammadpour Open Access Article Abstract Page Full-Text 3 - Sensitivity Analysis and Finding the Stability Region with Adding DMUs in DEA E. Sarfi E. Noroozi F. Hosseinzadeh Lotfi Open Access Article Abstract Page Full-Text 4 - یک الگوریتم برای ابرصفحه های سازای ضعیف PPS در تحلیل پوششی داده ها علی اکبر بانی محسن رستمی مالخلیفه فرهاد حسین زاده لطفی 10.30495/ijim.2022.66477.1586 Open Access Article Abstract Page Full-Text 5 - The Most Efficient Unit in Data Envelopment Analysis Using Genetic Algorithm M. Matin Nejati Mohsen Rostamy-Malkhalifeh R. Kargar R. Mehrjoo Open Access Article Abstract Page Full-Text 6 - Using lexicographic parametric programming for identifying efficient hyperpalnes in DEA Farhad Hosseinzadeh Lotfi F. Rezai Balf A. Taghavi Open Access Article Abstract Page Full-Text 7 - Characterizing a Subset of the PPS with Radial Projection Point on a Prespecified Hyperplane Najmeh Malekmohammadi Amin Mostafaee 10.30495/jiei.2022.1945972.1184 Open Access Article Abstract Page Full-Text 8 - A sequence of targets toward a common best practice frontier in DEA Nasim Nasrabadi Open Access Article Abstract Page Full-Text 9 - Finding stability regions for preserving efficiency classification of variable returns to scale technology in data envelopment analysis P . Zamani M . Borzouei Open Access Article Abstract Page Full-Text 10 - Operators reversing b-Birkhoff orthogonality in 2-normed linear spaces R. Pirali M. Momeni