Report Traffic and air quality – contribution of traffic to urban air quality in European cities. Hak, C.; Larssen, S.; Randall, S.; Guerreiro, C.; Denby, B.; Horálek, J. Publication details Series: ETC/ACC Technical paper, 2009/12 Publisher: European Topic Centre on Air and Climate Change Year: 2010 Link: ETC/ACC Technical paper 2009/12