Schepers, P., Helbich, M., Hagenzieker, M., Geus, B. de, Dozza, M., Agerholm, N., … Aldred, R. (2021). The development of cycling in European countries since 1990. European Journal of Transport and Infrastructure Research, 21(2), 41–70. https://doi.org/10.18757/ejtir.2021.21.2.5411