@book{15331,
	author = {Buzaglo, Meir, and ebrary, Inc.},
	title = {The logic of concept expansion},
	publisher = {Cambridge University Press,},
	year = {2002.},
	address = {Cambridge, U.K. ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10006803}
}