AXHAUSEN, K. W.; HAUPT, T.; HEIDL, U.. Searching for the Rail Bonus. European Journal of Transport and Infrastructure Research, [S.l.], v. 1, n. 4, sep. 2001. ISSN 1567-7141. Available at: <https://journals.open.tudelft.nl/ejtir/article/view/3504>. Date accessed: 28 nov. 2020. doi: https://doi.org/10.18757/ejtir.2001.1.4.3504.