فهرست مقالات Sepideh Vatani مقاله 1 - Evaluating Efficiency by Multiplier Method in Two-Stage Unit with Undesirable Outputs 10.30495/ijdea.2022.68506.1168 Sepideh Vatani International Journal of Data Envelopment Analysis , شماره 1 , سال 10 , زمستان 2022 مقاله 2 - Evaluation of efficiency using the product method in two-stage systems with undesirable outputs 10.30495/ijdea.2022.68507.1169 Sepideh Vatani International Journal of Data Envelopment Analysis , شماره 2 , سال 9 , بهار 2021
