TY  - BOOK
AU  - Xu,Zeshui
TI  - Hesitant fuzzy sets theory
T2  - Studies in fuzziness and soft computing
SN  - 9783319047102
U1  - 511.3223 
PY  - 2014///
CY  - New York
PB  - Springer
KW  - Fuzzy sets
N1  - Includes bibliographical references
ER  -