Crum, W. E., and H. G. Evelyn-White. The Monastery of Epiphanius at Thebes. Vol. II. The Metropolitan Museum of Art, 1926. no. 125, 584, 600, pp. 184, 302-305, 316 pl. VIII, IX, XIV.
Gampel, Alan. "Papyrological Evidence of Musical Notation from the 6th to the 8th Centuries." Musica Disciplina 57 (2012). pp. 16–17, fig. 6.
Gampel, Alan. "The Origins of Musical Notation in the Abrahamic Religious Traditions." In Age of Transition: Byzantine Culture in the Islamic World, edited by Helen C. Evans. New York: Yale University Press, 2015. p. 151, fig. 5.