Ruba’iyat of Khayyam. Translation and Introduction Paul Smith. Introduction to Edward FitzGerald's Ruba'iyat by R.A. Nicholson. New Humanity Books, 2012.
From the Introduction to Edward FitzGerald’s Ruba’iyat by R.A. Nicholson. Khayyam the Scientist and Philosopher. The Form, Function & History of the Ruba’i. A Comparison of the Major Translations into English of Khayyam’s Ruba’iyat. Translations into Other Languages. Selected Bibliography.
New Humanity Books. Kindle Edition.