THALER, Robert; WIEDERKEHR, Peter. Environmentally Sustainable Transport in the CEI Countries. European Journal of Transport and Infrastructure Research, [S. l.], v. 4, n. 1, 2004. DOI: 10.18757/ejtir.2004.4.1.4258. Disponível em: https://journals.open.tudelft.nl/ejtir/article/view/4258. Acesso em: 18 jun. 2024.