Monzeli, A.; Daneshian, B.; Tohidi, G.; Sanei, M.; Razavyan, S. Evaluating the Efficiency of Hospital Emergencies During COVID-19 Pandemic Crisis in the Presence of Undesirable Inputs in DEA. Fuzzy Optim. Model. J. 2021, 2 (3), 47-55. https://doi.org/10.30495/fomj.2021.1943126.1040.