Phillip Grierson and Alfred R Bellinger (1973)
Catalogue of the Byzantine Coins in the Dumbarton Oaks Collection and in the Whittemore Collection, vol. 3, Leo III to Nicephorus III (717-1081): Part 2 Basil I to Nicephorus III (867-1081)
Dumbarton Oaks Research Library and Collection, Washington D.C.