Grierson, Philip..
Phocas to Theodosius III. 602 - 717. Vol. 2 ; Part 2.. Heraclius Constantine to Theodosius III ( 641 - 717). /

. - Washington : Dumbarton Oaks Research Library and Collection,  1993 
. - X, 385-728, XLVI  p.  30 cm. 
 - ((Dumbarton Oaks Collection and in the Whittenmore colle )
<br/><label>  ISBN: </label>0-88402-024-X