TY  - BOOK
AU  - Dubois Didier
AU  - Prade Henri
TI  - Fuzzy sets and systems: theory and applications
SN  - 0-12-222750-6
U1  - 511.32 
PY  - 1980///
CY  - New York
PB  - Academic Press
KW  - Set theory
KW  - System analysis
ER  -