Anciaes, PR;    Metcalfe, P;    Heywood, C;    Sheldon, R;      (2019)    The impact of fare complexity on rail demand.                   Transportation Research Part A: Policy and Practice , 120    pp. 224-238.    10.1016/j.tra.2018.12.020 <https://doi.org/10.1016/j.tra.2018.12.020>.       Green open access