List of Articles Decision Making Unit Open Access Article Abstract Page Full-Text 1 - Network Data Envelopment Analysis Models For Measuring Efficiency Of a Four-Stage Supply Chain With Returned Outputs M. Vaez-Ghasemi Z. Moghaddas B. Rahmani Open Access Article Abstract Page Full-Text 2 - Using Data Envelopment Analysis-Discriminant Analysis for predicting the congestion Sarah Navidi M. Rostamy Malkhalifeh G. Tohidi mohammad nHassa Behzadi Open Access Article Abstract Page Full-Text 3 - Merging DMUs Based on of the idea Inverse DEA Elaheh Zeinodin Saeid Ghobadi Open Access Article Abstract Page Full-Text 4 - Ideal and anti-ideal decision making units: A fuzzy DEA approach A Hatami-Marbini Saber Saati A Makui Open Access Article Abstract Page Full-Text 5 - Completion of the paper “Ranking Efficient DMUs based on single virtual inefficient DMU in DEA” AmirReza Hassani Tabatabaee Amir Gholam Abri Shokrollah Ziari ebrahim niknaghsh Open Access Article Abstract Page Full-Text 6 - Identifying the most productive scale size in the green supply chain using data envelopment analysis Amir Gholam Abri