Peykani, Pejman, Namakshenas, Mohammad, Arabjazi, Nasim, Shirazi, Fatemeh, Kavand, Neda. Optimistic and Pessimistic Fuzzy Data Envelopment Analysis: Empirical Evidence from Tehran Stock Market. Fuzzy Optimization and Modeling Journal. 2021;2(2):12-21. 10.30495/fomj.2021.1931398.1028