Kazhdan, Alexander.
People and power in Byzantium: an introduction to modern Byzantine studies /
Alexander Kazhdan, Giles Constable 
. - Washington  : Dumbarton Oaks,  Center for Byzantine Studies,  Trustees for Harvard University,  1982 
. - XXII, 218 p.  23 cm. 
<br/><label>  ISBN: </label>0-88402-103-3