A Varna, le Pont-Euxin. [First International Pontic Congress. Greeks and Romans in the Black Sea and the importance of the Pontic region for the Graeco-Roman world. 7th century B.C. - 5th century A.D. Varna, Bulgaria, 6 - 9 September 1997]. - Nawotka, K. (Dialogues d'histoire ancienne, 24,2.1998, 1998)