1. Australian and New Zealand Council Environment and Conservation.Australian and New Zealand guidelines for fresh and marine water quality; 2000.
2. European Commission. Guidance domuent no. 27 Technical guidance for deriving environmnetal quality standards; 2011.
3. Stephan, C. E.; Mount, D. I.; Hansen, D. J.; Gentile, J. H.; Chapman, G. A.; Brungs, W.Guidelines for deriving numerical national water quality criteria for the protection of aquatic organisms and their uses. PB 85–227049; 1985.
4. Canadian Counscil of MInisters of the Enviroment. Determination of hazardous concentrations with species sensitivity distributions; 2013.
5. European Commission. Technical Guidance Document on Risk Assessment part II; 2003.