Proceedings of the British Academy 

 -  1978 
 -  64 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Byzantine Empire--Civilization<br/>Byzantine Empire--Foreign relations<br/>Byzantine Empire--History--1081-1453<br/>Byzantine Empire--History--Andronicus II Palaeologus, 1282-1328<br/>Emperors--Byzantine Empire