1. European Commission Regulation No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on Cosmetic Productshttp://ec.europa.eu/health/endocrine_disruptors/docs/cosmetic_1223_2009_regulation_en.pdf
2. Surfactant biodegradation;Swisher,1987
3. Novel Surfactants: Preparation, Application, and Biodegradability, Second Edition, Revised and Expanded;Holmberg,2003
4. Surfactant in the Environment;Myers,2006
5. Surfactants in cosmetics;Rhein,1997