4ATANASSOV K T.Intuitionistic fuzzy set[M].Heidelberg:Springer-Verlag,1999.
5ATANASSOV K T.Intuitionistic fuzzy sets[J].FSS,1986,20(1):87-96.
6ZADEH L A.Fuzzy sets[J].IC,1965,8(3):338-353.
7CHEN S M,TAN J M.Handling multicriteria fuzzy decision-making problems based on vague set theory[J].FSS,1994,67(2):163-172.
8Zadeh L A.Fuzzy sets[J].Information and Control,1965,8(3):338-356.
9Cheng C H.A new approach for ranking fuzzy numbers by distance method[J].Fuzzy Sets and Systems,1998,95:307-317.
10Chu T C,Tsao C T.Ranking fuzzy numbers with an area between the centroid points and original point[J].Computers and Mathematics with Applications,2002,43:111-117.