List of Articles Production Possibility Set (P Open Access Article Abstract Page Full-Text 1 - An Algorithm for Weak Defining Hyperplanes of the PPS in Data Envelopment Analysis علی اکبر بانی محسن رستمی مالخلیفه فرهاد حسین زاده لطفی 10.30495/ijim.2022.66477.1586 Open Access Article Abstract Page Full-Text 2 - Impact of Outliers in Data Envelopment Analysis A. Gholam ‎Abri‎