Jukka KorpelaPrince, Saint, and Apostle: Prince Vladimir Svjatoslavic of Kiev, His Posthumous Life, and the Religious Legitimization of the Russian Great Power (Otto Harrassowitz Verlag, 2001) page 133.
Rosemary Morris, Monks and Laymen in Byzantium, 843-1118 (Cambridge University Press, 2003) page 233.
Hans Belting, Likeness and Presence: A History of the Image Before the Era of Art (University of Chicago Press, 1994) page 524.
