Wolińska, Teresa, Paweł Filipczak, Sławomir Bralewski, Zofia A. Brzozowska, Marek M. Dziekan, Błażej Cecota, Hassan Badawy, and Marta Woźniak. Byzantium and the Arabs. The Encounter of Civilizations from Sixth to Mid-Eighth Century: No. XXII. Vol. XXII. Byzantina Lodziensia. Poland: Lodz University Press, 2016. Accessed January 21, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1436.