Coumans, Jos
An 'Umar Khayyám database. Jos Coumans.
In: The great 'Umar Khayyám. Leiden, Leiden University Press, 2012. pp. 242–252.
An 'Umar Khayyám database. Jos Coumans.
In: The great 'Umar Khayyám. Leiden, Leiden University Press, 2012. pp. 242–252.