Schepers, P., Helbich, M., Hagenzieker, M., Geus, B. de, Dozza, M., Agerholm, N., Niska, A., Airaksinen, N., Papon, F., Gerike, R., Bjørnskau, T. and Aldred, R. (2021) “The development of cycling in European countries since 1990”, European Journal of Transport and Infrastructure Research, 21(2), pp. 41–70. doi: 10.18757/ejtir.2021.21.2.5411.