HOLVAD, T. Railways in Transition: A Review of Five Countries. Proceedings from the Annual Transport Conference at Aalborg University, [S. l.], v. 9, n. 1, 2002. DOI: 10.5278/ojs.td.v9i1.4515. Disponível em: https://journals.aau.dk/index.php/td/article/view/4515. Acesso em: 29 apr. 2024.