Her you can find other sources about your interests.They all work clearly !

http://www.fuzzy-logic.com

http://www.seattlerobotics.org/encoder/mar98/fuz/flindex.html

http://www.abo.fi/~rfuller/fuzs.html

http://www.mathworks.com/products/fuzzylogic

http://plato.stanford.edu/entries/logic-fuzzy

http://www.webopedia.com/TERM/f/fuzzy_logic.html

http://www.aptronix.com/fide/whatfuzzy.htm

http://www.fuzzytech.com

http://www.wolfram.com/products/applications/fuzzylogic