Ḥakīm ʻUmar Khayyām ([between 1807 and 1970]) Rubāʻīyāt-i ʻUmar Khayyām : maʻah savāniḥ ʻumrī Ḥakīm ʻUmar Khayyām (marḥūm maghfūr) /. Marghūb Ejancī,. ISBN: .