BIBLIOGRAPHY REFERENCE: BOOK Omar Khayyam Author Boris Rozenfeld (Author) A. Yushkevich (Author) Year of Publication 1965 City Moscow Other Numbers 11500 See reference for OpenMind ISMI items with this reference Person: Ġiyāṯ al-Dīn Abū al-Fatḥ ʿUmar ibn Ibrāhīm al-Ḫayyāmī al-Nīšāpūrī