Stratos, Andreas N. 1905-1981.
Byzantium in the seventh century /
Andreas N. Stratos 
. - Amsterdam : Adolf M. Hakkert,  1968- 
. - v.  25 cm. 
<br/> 1. 602-634  <br/> 2. 634-641  <br/>  3. 642-668  <br/>  4. 668-685  <br/>  5. Justinian II, Leontius and Tiberius, 685-711  <br/>  <br/>