^Claude Delaval Cobham. 2016 (originally published in 1911). The Patriarchs of Constantinople. Cambridge University Press. P. 82. "Anastasius (730–754), Constantine II. (754––766) and Nicetas (766—780), all of them elkovouáxot, were court-nominees."
^Ruth J. Macrides (2010). History as Literature in Byzantium: Papers from the Fortieth Spring Symposium of Byzantine Studies. Ashgate Publishing.