List of Articles Common weights Open Access Article Abstract Page Full-Text 1 - Upgrading inefficient decision making units (with negative data) towards common weights (using DEA) Hossein Abbasiyan 20.1001.1.25885723.2021.13.3.1.8 Open Access Article Abstract Page Full-Text 2 - Nonparametric Model of Preferred Efficiency for Interval Scale Data (DEA) Hosein Abbasiyan Open Access Article Abstract Page Full-Text 3 - Portfolio Selection using Data Envelopment Analysis with common weights A. Alinezhad M. Zohrebandian F. Dehdar