ENSELEIT, T. Helmpflicht im Mittelalter (?). Mittelalter Digital, [S. l.], v. 1, n. 2, p. 1–28, 2021. DOI: 10.17879/mittelalterdigi-2020-3233. Disponível em: https://www.uni-muenster.de/Ejournals/index.php/mittelalterdigi/article/view/3233. Acesso em: 5 feb. 2025.