SAMBASS, M. Der Schiffermast an Rheinkilometer 424. Gedächtnis der Rheinschifffahrt, [S. l.], v. 1, n. 1, p. 123–128, 2023. Disponível em: http://134.155.36.56/index.php/gdr/article/view/230. Acesso em: 10 jan. 2025.