Himanen, Veli, Adriaan Perrels, and Martin Lee-Gosselin. “The Adequate Integration of Sustainability into Transport Policy: Some Major Dilemmas”. European Journal of Transport and Infrastructure Research 6, no. 1 (January 1, 2006). Accessed August 9, 2022. https://journals.open.tudelft.nl/ejtir/article/view/4324.