1. US Environmental Protection Agency Green Chemistry Home http://www.epa.gov/greenchemistry/index.html 2011
2. European Environment Agency http://www.eea.europa.eu/ 2011
3. Environment Directorate General, European Commission 2007 REACH in brief http://ec.europa.eu/environment/chemicals/reach/pdf/2007_02_reach_in_brief.pdf
4. International Organisation for Standardization (ISO) 2008 http://www.iso.org/iso/home.html