Angold, Michael.
The Byzantine Empire, 1025-1204: a political history /
Michael Angold 
. - London : New York : Longman,  1984 
. - x, 334 p.  map  22 cm. 
<br/>К.: Бібліогр. : c. 298-310, Index 
<br/><label>  ISBN: </label>0-582-49061-8