@book{4529,
	author = {Butchvarov, Panayot, and ebrary, Inc.},
	title = {Skepticism about the external world},
	publisher = {Oxford University Press,},
	year = {1998.},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10279489}
}