1. Abwassertechnische Vereinigung e.V. (ATV): 1983, Arbeitsblatt A115 ? Hinweise für das Einleiten von Abwasser in eine öffentliche Abwasseranlage, Verlag GFA, St. Augustin.
2. Davidson, L and Osborn, J.: 1986, ?The Sizes of Airborne Trace Metal Containing Particles?, in Nriagu, J. and L. Davidson, (eds.), Toxic Metals in the Atmosphere, Wiley, N.Y., pp. 355?390.
3. Ellis, J. B.: 1977, ?The Characterization of Particulate Solids and Quality of Water Discharged from an Urban Catchment?, in IAHS-AISH Publication, No. 123. The Effects of Urbanization and Industrialization on the Hydrological Regime and on Water Quality, pp. 283?291.
4. Freitag, G., Frimmel, F., and Quentin, K.: 1986, Z. Wasser-Abwasser-Forschung 19, 103.
5. Funk, W., Dammann, V., Vonderheid, C., and Oehlmann, G.: 1985, Statistische Methoden in der Wasseranalytik, VCH Verlagsgesellschaft mbH, Weinheim.