==Source==
*[[w:Patriarch_Photios_I_of_Constantinople&oldid=105866658|''Patriarch Photios I of Constantinople'' at Wikipedia]], retrieved on February 5, 2007
*[http://web.archive.org/web/20120112022100/http://homepage.mac.com/pgilbert22/articles/Dvornik%20on%20Photius.htm F. Dvornik: Photius, Patriarch of Constantinople]
==External links==