List of Articles Data Ambiguity Open Access Article Abstract Page Full-Text 1 - Optimistic and Pessimistic Fuzzy Data Envelopment Analysis: Empirical Evidence from Tehran Stock Market Pejman Peykani Mohammad Namakshenas Nasim Arabjazi Fatemeh Shirazi Neda Kavand 10.30495/fomj.2021.1931398.1028