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The appendices of Michael of Devol to the chronicle of John Skylitzes are a valuable testimony in the knowledge of the Balkan wars of emperor Basil II and the first century of Byzantine rule in Bulgaria. They also provide important information on the biographies of individual members of the Komitopules family or the process of assimilation of Bulgarian elites in the geographical area of Macedonia under Byzantine rule in the XI-XII centuries.
Jarosław Dudek (Mon,) studied this question.