{"id":"000543249","type":"article","title":"The popes and the Balkan Churches. Justinian to Gregory the Great, 525 - 604","pages":"45-57","container-title":"Byzantinische Forschungen. Internationale Zeitschrift für Byzantinistik, 20.1994","author":[{"family":"Frazee","given":"C."}],"issued":{"raw":"1994"}}