VALJAVEC, F. Höpker, Wolfgang: Europäisches Niemandsland. Südost-Forschungen, [S. l.], v. 1, n. 1, p. 471–472, 2021. Disponível em: https://www.suedost-forschungen.de/portal/index.php/sof/article/view/13200. Acesso em: 4 mai. 2024.