OLESEN, Preben. Jernbanebyggeri - europæisk udvikling samt omkostningsstruktur. Proceedings from the Annual Transport Conference at Aalborg University, [S. l.], v. 3, n. 1, 1996. DOI: 10.5278/ojs.td.v3i1.3925. Disponível em: https://journals.aau.dk/index.php/td/article/view/3925. Acesso em: 19 maio. 2024.