Heppner H. Focas, Spiridon: The Lower Danube River in the Southeastern European Political and Economic Complex from Antiquity to the Conference of 1948. SOF [Internet]. 30. November 2021 [zitiert 18. Mai 2024];1(1):312-3. Verfügbar unter: http://bsb0sit-zepweb01.bsb.lrz.de/portal/index.php/sof/article/view/8212