Ostrogorsky, George.
History of the Byzantine state /
George Ostrogorsky ; translated from the German by J. Hussey ; with a foreword by P. Charanis 
. - Revised edition 
. - New Brunswick : Rutgers University Press,  1969 
. - XL, 624 p.  ill.  24 cm. 
 - (Rutgers Byzantine series )