Dudek, J. (2020) “Western Balkans (7th–14th c.) – Lost and Restored to Byzantium”, in Brzozowska, Z.A. et al. (eds.) Phantom of Muhammad, Shade of Samuel Byzantine Empire in Relation to Members of Other Cultures and Religions (7th–15th c.): No. XXXIX. Poland: Lodz University Press (Byzantina Lodziensia), pp. 45–58. doi:10.18778/8142-804-0.03.