Soulis, George Christos.
The Serbs and Byzantium during the reign of tsar Stephen Dušan, (1331-1355), and his successors /
George Christos Soulis 
. - Washington  : Dumbarton Oaks Library and Collection,  1984 
. - xxvi, 353 p.  map.  24 cm. 
<br/>К.: Бібліогр. : с. 269-333 
<br/><label>  ISBN: </label>0-88402-137-8 
<br/><br/><label>Subjects--Personal Names: </label><br/>Stephen Dušan tsar