1. Evidence of an increasing NO2–NOx emissions ratio from road traffic emissions;Carslaw;Atmospheric Environment,2005
2. Air pollution in Europe 1990–2004;EEA,2007
3. Impact of NOx reduction on long-term ozone trends in an urban atmosphere;Itano;Science of the Total Environment,2007
4. Sturm, S., Hausberger, S., Keller, M., André, M., Steven, H., Rexeis, M., Cornelis, E., de Vlieger, I., van Poppel, M., Hammarström, U., Koskinen, O., McCrae, I., Pollak, I., Riemersma, I., Tartakovski, L., Zwirin, Y., Soltic, P., Weilenmann, M., 2006. COST 346-Energy and Fuel Consumption from Heavy Duty Vehicles, final report, TU-Graz, ISBN-10: 3-902465-48-4, October 2006. ISBN-13: 978-3-902465-48-1, pp. 1–133.