List of Articles Possibility theory 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 Open Access Article Abstract Page Full-Text 2 - A multi agent method for cell formation with uncertain situation, based on information theory N Javid A Makui Open Access Article Abstract Page Full-Text 3 - Investigation of Mean-variance efficiency frontier patterns of portfolios under possible theory Behnaz Ghadimi Mehrzad Minouei Gholamreza Zomorodian Mirfeiz Fallah