List of Articles Interval-valued fuzzy sets (IVFSs) Open Access Article Abstract Page Full-Text 1 - An Assessment Method for Project Cash Flow under Interval-Valued Fuzzy Environment Vahid Mohagheghi SEYED meysam mousavi Behnam Vahdani 10.22094/joie.2017.278 20.1001.1.22519904.2017.10.22.7.2