@book{132179,
	author = {Moeller, Hans-Georg, and ebrary, Inc.},
	title = {Luhmann explained},
	publisher = {Open Court,},
	year = {c2006.},
	series = {Ideas explained ;},
	address = {Chicago :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10465600}
}