Genre and Occasion in the Rubā‘iyyāt of ‘Umar Khayyām: The Rubā‘ī, Literary History, and Courtly Literature. Olga Merck Davidson
In: Writers and Rulers: Perspectives on Their Relationship from Abbasid to Safavid Times. Ed. by B. Gruendler, L. Marlow. Reichert, 2004. p. 133-147.