@book{100913,
	author = {Seyed-Gohrab, A. A. and ebrary, Inc.},
	title = {The great Umar Khayyam},
	publisher = {Amsterdam University Press,},
	year = {2012.},
	address = {Amsterdam :},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10613632}
}