1. Personal NO2 exposures of preschool children in Helsinki;Alm;J Expo Anal Environ Epidemiol,1998
2. Atkins DHF, Quirino I. A survey of nitrogen dioxide in Paris. European Community Commission Report EUR 13369 EN; 1992.
3. Brunekreef B. The measurement of exposure to air pollution: concepts, methods and stakes. In numéro spécial de Pollution Atmosphérique: 40ème anniversaire de l'APPA: la pollution atmosphérique et l'homme : évaluer les expositions; 1992;17–29.
4. ISO 13752. Assessment of uncertainty of a measurement method under field conditions using a second method as a reference; 1998. 19 pp.
5. Multivariate descriptive statistical analysis: correspondence analysis and related techniques;Lebart,1993