Historiography occupies a prominent position in the ancient written literary tradition.
The historical science of today actualizes its investigation in connection with the problems of the authenticity and reliability of the information contained in it. The object of research is the complex structure of the ancient historiographic tradition, which has been connected ever since its emergence with the philosophy, the development of the sciences, the moral theories and political events of its time. The fragmentary character of most of these historical works creates great difficulties in attempts to reconstruct the entire text to which a concrete fragment or a concrete title belongs. Studies aimed at reconstructing missing elements in the ancient historiographic tradition would enrich our views on the place of the Thracians and Thrace in the ancient historiography. An important element in such studies is the tracing of the history of the fragmented text in the Antiquity, the investigation of its sources and of the conditions for its transformation into a historical source.