List of Articles Open Access Article Abstract Page Full-Text 1 - A statistical test for outlier identification in data envelopment analysis Morteza Khodabin Reza Kazemi Matin Open Access Article Abstract Page Full-Text 2 - Obtaining a Unique Solution for the Cross Efficiency by Using the Lexicographic method G. R. Jahanshahloo R. Fallahnejad Open Access Article Abstract Page Full-Text 3 - Linear Programming, the Simplex Algorithm and Simple Polytopes Das Bhusan Biswal Bagaban J.P Tripathy Open Access Article Abstract Page Full-Text 4 - A new method for ordering triangular fuzzy numbers S. H. Nasseri S. Mizuno