@book{90499,
	author = {Halpern, Ben. and ebrary, Inc.},
	title = {A clash of heroes},
	publisher = {Oxford University Press,},
	year = {1987.},
	series = {Studies in Jewish history},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10142046}
}