1. EC DG Clima. Road transport: reducing CO2 emissions from vehicles | Climate Action n.d. http://ec.europa.eu/clima/policies/transport/vehicles_en [accessed November 28, 2016].
2. European Union. Regulation (EC) No 443/2009 of the European Parliament and of the Council setting emission performance standards for new passenger cars as part of the Community’s integrated approach to reduce CO2 emissions from light-duty vehicles; 2009.
3. Cost and well-to-wheel implications of the vehicle fleet CO2 emission regulation in the European Union;Thiel;Transp Res Part Policy Pract,2014
4. Review of in use factors affecting the fuel consumption and CO2 emissions of passenger cars - EU Science Hub - European Commission. EU Sci Hub; 2016. https://ec.europa.eu/jrc/en/publication/eur-scientific-and-technical-research-reports/review-use-factors-affecting-fuel-consumption-and-co2-emissions-passenger-cars [accessed November 28, 2016].
5. From laboratory to road - a 2015 update of official and “real-world” fuel consumption and CO2 values for passenger cars in Europe;Tietge,2015