@book{101786,
	author = {Helle, Horst J�urgen. and ebrary, Inc.},
	title = {Messages from Georg Simmel},
	publisher = {Brill,},
	year = {2012.},
	series = {Studies in critical social sciences ;},
	address = {Leiden ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10610030}
}