1. Georgii H-W (1989) Promet ? Meteorologische Fortbildung 19:65?72
2. Warneck P (1988) Chemistry of the natural atmosphere. Academic Press, San Diego, p 415
3. Behra P, Sigg L (1990) Nature 344:419?421
4. Warneck P (1988) Chemistry of the natural atmosphere. Academic Press, San Diego, p 512
5. Weidenauer M, Hoffmann P, Lieser KH (1988) Fresenius Z Anal Chem 331:372?375