ERIKSEN, Knut S. Calculating External Costs of Transportation in Norway: Principles and Results. European Journal of Transport and Infrastructure Research, [S. l.], n. 1, 2000. DOI: 10.18757/ejtir.2000.0.1.3491. Disponível em: https://journals.open.tudelft.nl/ejtir/article/view/3491. Acesso em: 6 jul. 2024.