1. Adams, S.M. (1990) Status and use of biological indicators for evaluating the effects of stress on fish. Am. Fish. Soc. Symp. 8, 1?8.
2. Begon, M., Harper, J.L. and Townsend, C.R. (1990) Ecology. Individuals, Populations and Communities, 2nd edn. Boston: Blackwell Scientific Publications.
3. Benson, W.H. and Di Giulio, R.T. (1992) Biomarkers in hazard assessment of contaminated sediments. In Burton, G.A. (ed.) Sediment toxicity assessment, p. 241. Boca Raton: Lewis Publ.
4. Cairns, J. Jr (1986) The myth of the most sensitive species. Bioscience 36, 670?2.
5. Cairns, J. Jr and McCormick, P.V. (1992) Developing an ecosystem-based capability for ecological risk assessments. Environ. Profession. 14, 186?96.