Borst, Arno..
Medieval worlds : barbarians, heretics and artists in the Middle Ages /
translated by E. Hansen 
. - Chicago  : The University of Chicago Press,  1992 
. - XIV, 273 p.  24 cm. 
<br/>К.: Бібліогр. : с. 251-261. 
<br/><label>  ISBN: </label>0-226-06656-8