1. Guidance for the Implementation of REACH - Guidance on Information Requirements and Chemical Safety Assessment. Chapter R.7c: Endpoint Specific Guidance. European Chemicals Agency, Helsinki; 2012.
2. Guideline 216: OECD Guideline for the Testing of Chemicals. Soil Microorganisms: Nitrogen Transformation Test. Organisation for Economic Co-operation and Development, Paris; 2000.
3. Guideline 217: OECD Guideline for the Testing of Chemicals. Soil Microorganisms: Carbon Transformation Test. Organisation for Economic Co-operation and Development, Paris; 2000.
4. Soil Quality - Determination of Potential Nitrification and Inhibition of Nitrification - Rapid Test by Ammonium Oxidation. International Organization for Standardization, Geneva; 2012.
5. Piccinno F, Gottschalk F, Seeger S, Nowack B: Industrial production quantities and uses of ten engineered nanomaterials in Europe and the world. J Nanopart Res 2012, 14(1109: 1–1109):11.