@book{58613,
	author = {IFSA World Congress and Melin, Patricia,},
	title = {Foundations of fuzzy logic and soft computing :},
	publisher = {Springer,},
	year = {c2007.},
	address = {Berlin ;},
	url = {http://www.springerlink.com/openurl.asp?genre=issue&issn=0302-9743&volume=4529}
}