Road infrastructure cost and revenue in Europe : produced within the study Internalisation Measures and Policies for all external cost of Transport (IMPACT) Deliverable 2 : report / authors: Claus Doll, Huib van EssenInternalisation measures and policy for the external cost of transport : produced within the study Internalisation Measures and Policies for all external cost of transport (IMPACT) Deliverable 3 : report / author(s) H.P. van Essen ... [et al.]