Brand 1989, p. 3. Brand, Charles M. (1989). "The Turkish Element in Byzantium, Eleventh-Twelfth Centuries". Dumbarton Oaks Papers. 43: 1–25. doi:10.2307/1291603. JSTOR1291603.
jstor.org
Brand 1989, p. 3. Brand, Charles M. (1989). "The Turkish Element in Byzantium, Eleventh-Twelfth Centuries". Dumbarton Oaks Papers. 43: 1–25. doi:10.2307/1291603. JSTOR1291603.