فهرس المقالات monzeli abbasali المقاله 1 - Influence of undesirable output factor on efficiency determination in DEA: A Case study of hospital emergency Tehran Abbasali Monzeli Behrouz Danishian Tohidi Qassem Razaveian Shabnam Sanei Masoud International Journal of Data Envelopment Analysis , العدد 4 , السنة 8 , تابستان 2020 المقاله 2 - Evaluating the Efficiency of Hospital Emergencies during COVID-19 Pandemic Crisis in the Presence of Undesirable Inputs in DEA 10.30495/fomj.2021.1943126.1040 Abbasali Monzeli Behrouz Daneshian Ghasem Tohidi Masoud Sanei Shabnam Razavyan Fuzzy Optimization and Modeling Journal , العدد 4 , السنة 2 , تابستان 2021