@book{243645,
	author = {Lima, Elon Lages, and ebrary, Inc.},
	title = {Fundamental groups and covering spaces},
	publisher = {AK Peters,},
	year = {c2003.},
	address = {Natick, Mass. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10159709}
}