Flyvbjerg, Bent, Nils Bruzelius, and Bert van Wee. “Comparison of Capital Costs Per Route-Kilometre in Urban Rail”. European Journal of Transport and Infrastructure Research 8, no. 1 (January 1, 2008). Accessed April 24, 2024. https://journals.open.tudelft.nl/ejtir/article/view/3327.