HEPPNER, H. Focas, Spiridon: The Lower Danube River in the Southeastern European Political and Economic Complex from Antiquity to the Conference of 1948. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 312–313, 2021. Disponível em: http://bsb0sit-zepweb01.bsb.lrz.de/portal/index.php/sof/article/view/8212. Acesso em: 18 mai. 2024.