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