{"id":"001275033","type":"book","title":"John II Comnenus (1118-43) or John III Vatatzes (1222-54)? (Distinguishing the hyperpyra of John II from those of John III)","pages":"269-299","container-title":"The Numismatic Chronicle, 7th Series, 166 (2006","author":[{"family":"Lianta","given":"Eleni"}],"issued":{"raw":"2006"}}