1. Aarnio, P., Hämekoski, K., Koskentalo, T., Virtanen, T., 1995. Air quality, monitoring and air quality index in the Helsinki metropolitan area, Finland In: Anttila, P., et al. (Eds). Proceedings of the 10th World Clean Air Congress, Espoo, Finland, May 28–June 2. Vol. 2. The Finnish Air Pollution Prevention Society. Helsinki, pp 201 (4 pages)
2. Evaluation of a model for hourly spatial concentration distributions;Grønskei;Atmospheric Environment,1993
3. Helsinki Metropolitan Area Board, 1999. Helsinki Metropolitan Area Transportation System Plan, PLJ 1998. Helsinki Metropolitan Area Series A 1999:4. YTV Helsinki Metropolitan Area Council, Helsinki, 25pp.
4. Hertel, O., Berkowicz, R., 1989. Modelling Pollution from Traffic in a Street Canyon. Evaluation of Data and Model Development. DMU Luft-A129. National Environmental Research Institute, Roskilde, 77pp.
5. Evaluation of dispersion models for an urban environment;Häggkvist;International Journal of Environment and Pollution,1997