List of Articles Decision Making Unit Open Access Article Abstract Page Full-Text 1 - A generalized model in the performance evaluation of decision making sub-units امیر محمدی Open Access Article Abstract Page Full-Text 2 - 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 3 - 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 4 - Review of the methods for evaluating congestion in DEA and computing output losses due to congestion H. Zare Haghighi M. Khodabakhshi G. R. Jahanshahloo Open Access Article Abstract Page Full-Text 5 - Efficiency Measurement in Two-Stage Network Structures Considering Undesirable Outputs A. Amirteimoori A. Toloie-Eshlaghi M. Homayoonfar Open Access Article Abstract Page Full-Text 6 - A nonlinear model for common weights set identification in network Data Envelopment Analysis J. Pourmahmoud Z. Zeynali‎ Open Access Article Abstract Page Full-Text 7 - New model for ranking DMUs in DDEA as a special case J. Pourmahmoud