1. 4. European Union : Technical Guidance Documents in Support of the Commission Directive 93/67/EEC on Risk Assessment for New Notified Substances and the Commission Regulation (EC) 1488/94 on Risk Assessment for Existing Substances, temporary version. Ispra, Italy, ECB, 1996 .
2. 5. European Centre for Ecotoxicology and Toxicology of Chemicals : Assessment Factors in Human Health Risk Assessment . Brussels, European Centre for Ecotoxicology and Toxicology of Chemicals, 1995 .