TY  - BOOK
AU  - Lowen,R.
TI  - Fuzzy set theory: basic concepts, techniques, and bibliography 
SN  - 0792340574
PY  - 1996///
CY  - Dordrecht
PB  - Kluwer Academic Publishers
KW  - Fuzzy sets
N1  - References : p. 241-404
ER  -