1. Ahlf W, Hollert H, Neumann-Hensel H, Ricking M (2002): A guidance for the assessment and evaluation of sediment quality: A German approach based on ecotoxicological and chemical measurements. JSS —J Soil & Sediments 2, 37–42
2. Claus E, Tippmann P, Heininger P (2002): Anwendung differenzierter Untersuchungsmethoden zur Sedimentbewertung. UWSF — Z Umweltchem Ökotox 14 (1)3–7
3. DIN 38412 L16 (1995): Determination of the chlorophyll-a content of surface water. German Institut of Normalisation, Berlin
4. DIN 38412 L30 (1989): German standard methods for the examination of water, waste water and sludge — Bio-assays (group L) — Determination of the non-acute-poisonous effect of waste water toDaphnia magna
5. DIN 38412 L33 (1991): German standard methods for the examination of water, waste water and sludge — Bio-assays (group L) — Determination of the non-poisonous effect of waste water to green algae (Scenedesmus) chlorophyll fluorescence test) by dilution limits