Yunguo Lin Xiaoyun Chen Shanli Hu Interval-Valued Agent Belief Model Based on New Fuzzy Set Theory. 116-120 2007 FSKD (4) https://doi.org/10.1109/FSKD.2007.370 https://doi.ieeecomputersociety.org/10.1109/FSKD.2007.370 conf/fskd/2007-4 db/conf/fskd/fskd2007-4.html#LinCH07