@book{20908,
	author = {Halm, Heinz, and ebrary, Inc.},
	title = {The Fatimids and their traditions of learning},
	publisher = {I.B. Tauris in association with the Institute of Ismaili Studies,},
	year = {1997.},
	series = {Institute of Ismaili Studies. Ismaili heritage series ;},
	address = {London ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10701585}
}