List of Articles DEA Open Access Article Abstract Page Full-Text 1 - Interval Efficiency Assessment in Network Structure Based on Cross –Efficiency nasim roudabr seyed esmaeil najafi Open Access Article Abstract Page Full-Text 2 - Improving Lifetime of Strategic Information Network in Oil Supply Chain mohammad ali afshar kazemi mohammad hossein darvish motevally Mahmood Darvish Motevalli Open Access Article Abstract Page Full-Text 3 - Evaluating the Production Materials Suppliers of Saipa Industrial Group by Using Data Envelopment Analysis(DEA) A. Javadinia A. Gholam Abri Open Access Article Abstract Page Full-Text 4 - Developing an Appropriate Investment Model in Stock Exchange by DEA Neural Network Approach مصطفی کاظمی محمد اسفندیار حدیث نجاریان