[Footnote 13: The first kingdom of the Bulgarians may be
found, under the proper dates, in the Annals of Cedrenus and
Zonaras. The Byzantine materials are collected by Stritter,
(Memoriae Populorum, tom. ii. pars ii. p. 441 - 647;) and
the series of their kings is disposed and settled by
Ducange, (Fam. Byzant. p. 305 - 318.)]