List of Articles Open Access Article Abstract Page Full-Text 1 - A Note on Approximately Amenable Modulo an Ideal of Banach Algebras H-R. Rahimi A. Soltani Open Access Article Abstract Page Full-Text 2 - The Uniqueness of the Overall Assurance Interval for Epsilon in DEA Models by the Direction Method S. Mehrabian Open Access Article Abstract Page Full-Text 3 - An integrated model for solving the multiple criteria ABC inventory classification problem M. Aghashahi A. Hadi-Vencheh Open Access Article Abstract Page Full-Text 4 - Classifying Flexible Factors Using Fuzzy Concept S. Saati N. Imani Open Access Article Abstract Page Full-Text 5 - Introducing a secondary goal for evaluating DMUs by cross efficiency in data envelopment analysis R. Mehrjoo نقی .Shoja Open Access Article Abstract Page Full-Text 6 - Productivity changes of units: A directional measure of cost Malmquist index G. Tohidi S. Tohidnia