Lampakis & Andriopoulou 2003. Lampakis, Stylianos; Andriopoulou, Vera. Theme of Opsikion (Οψικίου Θέμα). Encyclopedia of the Hellenic World: Asia Minor. Athens, Greece: Foundation of the Hellenic World. October 17, 2003 [7 October 2009]. (原始内容存档于2016-03-03) (希腊语).
Lampakis & Andriopoulou 2003. Lampakis, Stylianos; Andriopoulou, Vera. Theme of Opsikion (Οψικίου Θέμα). Encyclopedia of the Hellenic World: Asia Minor. Athens, Greece: Foundation of the Hellenic World. October 17, 2003 [7 October 2009]. (原始内容存档于2016-03-03) (希腊语).