Gui-wu WEI. Some Geometric Aggregation Operators with Triangular Fuzzy linguistic information and Their Application to Group Decision Making[EB/OL]. Beijing:Sciencepaper Online[2008-09-01]. http://www.paper.edu.cn/releasepaper/content/200809-18. 此文件来自 中国科技论文在线 请勿作用于商业用途!