His Rubai, 1991 t.p. (Omar Khaĭi︠a︡m) p. 3 (Gii︠a︡s ad-Din Fatkh ibn Ibrakhim Omar Khaĭi︠a︡m Nishapuri)
Rubaiyat ; seguidos del poema Kuza-nama, 1951 t.p. (Omar Kheyyam)
Omā Kaiyamu Yongyōka hyakku, 1910.
Ensayo crítico sobre Las Rubáiyát de Umar-i-Khayyám, 1930.
Roumpagiat, 1953 t.p. (Omar Kagiam)
Robaiyyat, c1993 t.p. (Omar Jayyam)
Ruboiĭlar, 1976 t.p. (Umar Khaĭëm)
Rubaije, 2000 t.p. (Omer Hajjam)
Ruboʺiëti Khaĭëm, 1996 p. 3 (Umari Khaĭëm)
Erdmann, D. Drei Lieder für mittlere Stimme, Mandoline und Gitarre, c2001 t.p. (Omar) p. 2 (Omar, der Zeltmacher)
Robáiyáte Omar Xayyám, c1997.
Rubāʻīyāt-i ʻUmar K̲h̲ayyām, 2007 t.p. (Umara K̲h̲ayyāma) jkt. (Abūlfat̤ḥ G̲h̲ayās̲uddīn ʻUmar bin Ibrāhīm, Abula Fateha Ghayāsuddīna Umara bina Ibrahīma)
An essay by the uniquely wise ʻAbel Fath Omar Bin Al-Khayyam on algebra and equations, c2008 t.p. (Omar Al-Khayyam)
Wikipedia, July 19, 2008 (Omar Khayyám; Ghiyās od-Dīn Abol-Fath Omār ibn Ebrāhīm Khayyām Neyshābūri (b. Neyshābūr, Persia, May 18, 1048-d. Dec. 4, 1122); Persian poet, mathematician, philosopher and astronomer; name is also given as Omar al-Khayyami)