Ivison, E. A. «Amorium in the Byzantine Dark Ages (seventh to ninth centuries)». A: Henning, J. Post-Roman Towns, Trade and Settlement in Europe and Byzantium, Vol. 2: Byzantium, Pliska, and the Balkans (en anglès). Walter de Gruyter, 2007, p. 25-59. ISBN 978-3-11-018358-0.