Michael F Hendy, ALfred R Bellinger, and Phillip Grierson (1999)

Catalogue of the Byzantine Coins in the Dumbarton Oaks Collection and in the Whittemore Collection, vol. 4, Alexius I to Michael VIII (1081-1261): Part 2 The Emperors of Nicaea and Their Contemporaries (1204-1261)

Dumbarton Oaks Research Library and Collection, Washington D.C.