נוצר על־ידי מעלה היצירה based on:

• Geophysical map taken from DEMIS Mapserver, which are public domain, other wise self-made.
• Map of the cities listed in Hierocles' Synecdemus after Ernest Honigmann, Le Synecdèmos d'Hiéroclès et l'opuscule géographique de Georges de Chypre, Brussels 1939
• Florin Curta, The Making of the Slavs - History and Archaeology of the Lower Danube Region, c. 500–700, Cambridge University Press 2001, ISBN 978-0521802024
• John F. Haldon, Warfare, state and society in the Byzantine world, 565–1204 Routledge 1999, ISBN 978-1857284959.

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