Byzantium's last imperial offensive in Asia Minor : the documentary evidence for and hagiographical lore about John III Ducas Vatatzes' crusade against the Turks, 1222 or 1225 to 1231 - Langdon, John Springer, 1942- (A.D. Caratzas, 1992)
Includes the Greek text of a paraphrase of an anonymous biography of John Ducas Vatatzes.
Revision of the author's thesis (Ph. D.--University of California, Los Angeles, 1979), which appeared under the title: John III Ducas Vatatzes' Byzantine Imperium in Anatolian exile, 1222-54.