@book{203070,
	author = {Langkau, Julia. and ebrary, Inc.},
	title = {New perspective on concepts},
	publisher = {Rodopi,},
	year = {2010.},
	series = {Grazer philosophische Studien,},
	address = {Amsterdam :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10399541}
}