HEIDBRINK, Ingo. Petroleum Tanker Shipping on German Inland Waterways, 1887-1994. The Northern Mariner / Le marin du nord, [S. l.], v. 11, n. 2, p. 57–67, 2001. DOI: 10.25071/2561-5467.590. Disponível em: https://tnm.journals.yorku.ca/index.php/default/article/view/590. Acesso em: 23 nov. 2024.