FREISEIS, R. Hilfe für zerbrochene Siegel. Archivnachrichten, [S. l.], n. 11, p. 7, 1995. DOI: 10.53458/an.vi11.4602. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/an/article/view/4602. Acesso em: 2 mai. 2024.