1. Bentz JWG, Goschnick J, Schuricht J, Ache HJ (1995) Fresenius J Anal Chem 353 (this issue)
2. Berner A, Klaus N (1985) Staub-Reinhaltung der Luft 45:68
3. Schwieters J, Cramer H-G, Heller T, Jürgens U, Niehuis E, Zehnpfennig J, Benninghoven A (1991) J Vac Sci Technol A9:2864?2868
4. Lies KH, Hartung A, Postulka A, Gring H, Schulz J (1986) In: Ishinishi N, et al. (eds) Carcenogenic and mutagenic effects of diesel engine exhaust. Elsevier, Amsterdam
5. Warneck P (1987) Chemistry of the natural atmosphere, vol 41. In: International Geophysics. Academic Press, New York