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2. United States Environmental Protection Agency (US EPA), Risk Assessment Guidelines for Superfund. Human Health Evaluation Manual, Part A, US EPA, Office of Emergency and Remedial Response, Washington, DC, 1989, EPA/540/1-89/002.
3. Bioassay-based risk assessment of complex mixtures
4. Office of the Federal Register (OFR), Appendix A: Priority Pollutants, Fed Reg. 47 (1982) 52309.
5. Department of the Environment (DOE), Priority Substance List, Canada Gazette Part 1, 1989, pp. 543–545.