@book{14920,
	author = {Khalkhali, Masoud, and ebrary, Inc.},
	title = {An invitation to noncommutative geometry},
	publisher = {World Scientific,},
	year = {c2008.},
	address = {New Jersey :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10255672}
}