HAUPTMANN, F. Radenković, M.: Cerske operacije (Die Operationen am Cer-Gebirge). Südost-Forschungen, [S. l.], v. 1, n. 1, p. 446–447, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/12743. Acesso em: 8 mai. 2024.