9. Irena-Eulogia Choumnaina: tvrdohlavá abatyše Materiály: Dějiny Byzance, 304 – 326. Constantinides Hero, A., (ed.), The Life and Letters of Theoleptos of Philadelphia. Brookline, 1994. _____, A Woman’s Quest for Spiritual Guidance: The Correspondence of Princess Irene Eulogia Choumnaina. Brookline, Massachussetts, 1986. Nicol, D. M., The Byzantine Lady: Ten Portraits, 1250-1500, Cambridge, 1996 (1st published 1994).