ETTINGHAUSEN, R. In memoriam Ernst Kühnel, 26.10.1882 - 5.8.1964. Madrider Mitteilungen, [S. l.], v. 6, p. 215–236, 2021. DOI: 10.34780/fbd9-8cdd. Disponível em: https://publications.dainst.org/journals/mm/article/view/3465. Acesso em: 3 juli. 2024.