Constantine VII Porphyrogenitus Emperor of the East 905-959.
Commentary /
F. Dvornik ... [et al.] ; edited by R.J.H. Jenkins 
. - London : University of London,  Athlone Press,  1962 
. - vi, 222 p.  24 см. 
<br/>К.: Бібліогр. : c. ix-x, Indexes