1. Council Directive 92/32/EEC of 30 April 1992 amending for the seventh time Council Directive 67/548/EEC on the approximation of laws, regulations and administrative provisions relating to the classification, packaging and labeling of dangerous substances. Off J European Comm L 154/1
2. Annex to Commission Directive 92/69/EEC of 31 July 1992. Adaptation to technical progress for the seventeenth time Council Directive 67/548/EEC on the approximation of laws, regulations and administrative provisions relating to the classification, packaging and labeling of dangerous substances. Off J European Comm L 383A
3. Council Regulation 793/93 of 23 March 1993 on the evaluation and control of the risks of existing substances. Off J European Comm L 84/1
4. Code of Federal Regulations (CFR) 40 parts 797.1050 to 797. 2850. July 1, 1997. U.S. Environmental Protection Agency
5. U.S. Environmental Protection Agency (1992) Framework for ecological risk assessment, EPA/603/R-92/001, Washington, DC