1. Alexander PJ (1958) The Patriarch Nicephorus of Constantinople. Oxford University Press, Oxford
2. Anastos MV (1954) The ethical theory of images formulated by the iconoclasts in 754 and 815. Dumbarton Oaks Papers 8:151–160
3. Declerck J (2004) “Les sept opuscules “Sur la fabrication des images” attribués à Nicéphore de Constantinople.”. In: Janssens B, Roosen B, van Deun P (eds) Philomathestatos: Studies in Greek and Byzantine Texts. Peeters, Louvain, pp 105–164
4. Editorial (2006) Not picture-perfect. Nature 439:891–892
5. Freeman A (ed) (1998) Opus Caroli regis contra synodum (Libri Carolini). Hahn, Hamburg