@book{29688,
	author = {Wray, Shona Kelly. and ebrary, Inc.},
	title = {Communities and crisis},
	publisher = {Brill,},
	year = {2009.},
	series = {The medieval Mediterranean ;},
	address = {Leiden ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10349123}
}