TY  - BOOK
AU  - Yager R R
TI  - Fuzzy set and possibility theory : recent developments
SN  - 0-08-026294-5
U1  - 511.32 
PY  - 1982///
CY  - New York
PB  - Pergamon Press
KW  - Fuzzy sets
KW  - Possibility
ER  -