Constantine VII Porphyrogenitus Emperor of the East 905-959.
De administrando imperio /
Constantine Porphyrogenitus 
. - Budapest : Pz̀mǹy Pťer tudomǹyegyetemi gr̲g̲ filologiai intžet,  1962- 
. - v.  24 cm. 
<br/> V. 2. Commentary / by F. Dvornik ... [et al.] ; edited by R.J.H. Jenkins  <br/>  <br/>