5Yager R R. On ordered weighted averaging aggregation operators in multi criteria decision making [J]. IEEE Transactions on Systems, Man, and Cybernetics, 1988, 18.183-190.
6Yager R R. Induced aggregation operators[J]. Fuzzy Sets and Systems, 2003,137: 59-69.
7Zadeh L A. A computational Approach to Fuzzy Quantifiers in Natural Languages [J]. Comput. Math. Appl., 1983, 9.. 149-184.
8Delgado M, Verdegay J L, V'da M A. On Aggregation Operations of Linguistic Labels [J]. International Journal of Intelligent Systems,1993, 8: 351-370.
9Torra V. Negation Functions Based Semantics for Ordered Linguistic Labels [J]. International Journal of Intelligent Systems, 1996, 11:975-988.
10Herrera E A Sequential Selection Process in Group Decision Making with Linguistic Assessment [J]. Inform Sci., 1995, 85: 223-239.
