List of Articles preferred efficiency Open Access Article Abstract Page Full-Text 1 - Nonparametric Model of Preferred Efficiency for Interval Scale Data (DEA) Hosein Abbasiyan Open Access Article Abstract Page Full-Text 2 - Two methods to obtain preferred efficiency for negative data (IS) Hossein Abbasiyan mohamadjafar doostideilami 10.30495/ijm2c.2023.1952616.1246