Brzozowska, Zofia A., Mirosław J. Leszka, Kirił Marinow, and Teresa Wolińska, eds. 2020. Phantom of Muhammad, Shade of Samuel Byzantine Empire in Relation to Members of Other Cultures and Religions (7th–15th c.): No. XXXIX. Byzantina Lodziensia. Poland: Lodz University Press. https://doi.org/10.18778/8142-804-0.