@book{13048,
	author = {Berkel, Maaike van.},
	title = {Crisis and continuity at the Abbasid court :},
	publisher = {Brill,},
	year = {2013.},
	series = {Islamic history and civilization. Studies and texts ;},
	address = {Leiden ;},
	url = {http://dx.doi.org/10.1163/9789004252707}
}