Greifenhagen, Adolf. Schmuckarbeiten in Edelmetall aus den Staatliche Museen Berlin. Preussischer Kulturbesitz Antikenabteilung, 2 vols., Berlin: Mann, 1971–1975.

van den Hoek, Annewies, Denis Feissel, and John Herrmann. "Lucky Wearers: A Ring in Boston and a Greek Epigraphic Tradition of Late Roman and Byzantine Times," in Journal of the Museum of Fine Arts, Boston, Vol. 6 (1994), pp. 41-62

Marshall, Frederick H. Catalogue of the Finger Rings, Greek, Etruscan, and Roman, in the Departments of Antiquities. London: British Museum, 1907.

Spier, Jeffrey. Late Antique and Early Christian Gems, Wiesbaden: Reichert Verlag, 2007.

Spier, Jeffrey. Late Byzantine Rings, 1204-1453. Wiesbaden: Reichert Verlag, 2013.

Vikan, Gary. "Early Christian and Byzantine Rings in the Zucker Family Collection," in The Journal of the Walters Art Gallery 45 (1987), pp. 32-43.

Weitzmann, Kurt, ed. Age of Spirituality: Late Antique and Early Christian Art, Third to Seventh Century. New York: Metropolitan Museum of Art, 1979.