Runciman, Steven.
The Eastern schism: a study of the papacy and the Eastern churches during the XIth and XIIth centuries /
Steven Runciman 
. - Oxford : At the Clarendon Press,  1997 
. - viii, 189 p.  22 cm. 
<br/>К.: Бібліогр. : с. 171-181, Покажчик 
<br/><label>  ISBN: </label>0-19-826417-8