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The Portrayal of the Bulgarian Tsar Samuel in the Byzantine Sources (10th–12th c.). In Phantom of Muhammad, Shade of Samuel Byzantine Empire in Relation to Members of Other Cultures and Religions (7th–15th c.): No. XXXIX; Brzozowska, Z. A., Leszka, M. J., Marinow, K., Wolińska, T., Eds.; , Series Ed.; Byzantina Lodziensia; Lodz University Press: Poland, 2020; pp. 111-123. https://doi.org/10.18778/8142-804-0.05.