1. ASTM. 2003. Standard guide for sampling terrestrial and wetlands vegetation. ASTM Annual Book of Standards. E1963–98. Vol. 11.05. American Society for Testing and Materials, Conshohocken, PA.
2. ASTM. 2005. Standard Guide for Estimating Wildlife Exposure Using Measures of Habitat Quality. Vol. 11.05. American Society for Testing and Materials. Conshohocken, PA.
3. Belzer, R. (2001) Using economic principles for ecological risk management. In Stahl, R.G. et al. (eds) Risk Management: Ecological Risk-Based Decision Making. Chapter 6. SETAC Press, Pensacola, FL. Pp. 75–90.
4. Bishop RC, Lipton J, Margolis M, Meade NF, Peterson GL, Randal A. (in review). The Context for Integrating Economics and Ecological Assessment. in Stahl, R, Kapustka LA, Bruins R, Munns WR (eds). Valuation of Ecological Resources. Proceedings of SETAC Pellston Workshop, October, 2003.
5. Chapman PM, Caldwell RS, Chapman PF. 1996. A warning:NOECs are inappropriate for regulatory use. Environ Toxicol Chem 15: 77–79.