7Xu Z S. Uncertain linguistic aggregation operators based approach to muhiple attribute group decision making un- der uncertain linguistic environment [ J ]. Information Science, 2004, 168 : 171 - 184.
8Xu Zeshui. Induced uncertain linguistic OWA operators applied to group decision making [ J ]. Information fusion,2006(7 ) :231 - 238.
9Xu Zeshui. Multiple attribute decision making based on different types of linguistic information [ J ]. Journal of Southeast University,2006, 22( 1 ) :134 - 136.