List of Articles Variations Open Access Article Abstract Page Full-Text 1 - Flexibility of Variations in Radial and Non-Radial Data Envelopment Analysis Models S. ‎Kordrostami A. ‎Amirteimoori‎ M. Jahani Sayyad ‎Noveiri‎ Open Access Article Abstract Page Full-Text 2 - The Solution of Fully Fuzzy Quadratic Equations Based on Restricted Variation L. Gerami ‎Moazam