Poulikakos, L. D., Mayer, R. M., Heutschi, K., Soltic, P., Lees, A., & Van Loo, H. (2016). Defining road and rail vehicles with a low environmental footprint. In L. Rafalski & A. Zofka (Eds.), Transportation research procedia: Vol. 14. Transport research arena TRA2016 (pp. 830-839). https://doi.org/10.1016/j.trpro.2016.05.031