TY  - BOOK
AU  - Dubois Didier
AU  -  Prade Henri
TI  - Fuzzy sets and systems: Theory and applications
T2  - Mathematics in science and engineering; 144
U1  - B25, M0-;1 
PY  - 1980///
CY  - New York    
PB  -  Academic Press       
KW  -  Higher algebra
KW  -  System analysis
KW  - Mathematics
ER  -