Campbell, P. G. C. 1995. Interactions between trace metals and aquatic organisms: A critique of the free-ion activity model. In: Tessier, A.; Turner, D. R. Eds. Metals Speciation and Bioavailability in Aquatic Systems. John Wiley and Sons, Chichester, UK, pp 45-102.

Crane, M.; Matthiessen, P.; Maycock, D. S.; Merrington, G.; Whitehouse, P. 2010. Derivation and Use of Environmental Quality and Human Health Standards for Chemical Substances in Water and Soil. CRC Press, Boca Raton, FL.

Drexler, J.; Fisher, N.; Henningsen, G.; Lanno, R.; Mcgreer, J.; Sappington, K. G. 2003. Issue paper on the bioavailability and bioaccumulation of metals. U.S EPA Risk Assessment Forum, Washington.

Environment Agency. 2009. Using biotic ligand models to help implement environmental quality standards for metals under the Water Framework Directive. Science Report SC080021/SR7b, Environment Agency, Bristol, UK.

Environment Agency. 2011. Ecological indicators for abandoned mines. Science Report SC090024/2, Environment Agency, Bristol, UK.

European Commission (EC). 2010. Chemicals and the Water Framework Directive: Technical guidance for deriving environmental quality standards. JRC, Ispra, Italy.

Hommen, U.; Knopf, B.; Rüdel, H.; Schäfers, C. 2011. Community level study with nickel in aquatic microcosms. Final report. Prepared for the Nickel Producers Environmental Research Association, Durham, NC, USA.

ISO/WD 5667-20. 2005. Water quality—Sampling—Part 20: Guidance on the use of sample data for decision making–compliance with limit values and classification. British Standards Publications, London, UK.

Lepper, P. 2005. Manual on the methodological framework to derive environmental quality standards for priority substances in accordance with Article 16 of the Water Framework Directive (2000/60/EC). Schmallenberg (DE): Fraunhofer-Institute of Molecular Biology and Applied Ecology.

Niyogi, S.; Wood, C. M. 2004. Biotic ligand model, a flexible tool for developing site-specific water quality guidelines for metal. Environ. Sci. Technol. 38: 6177-6192.

Peters, A.; Crane, M.; Adams, W. 2011a. Effects of iron on benthic macroinvertebrate communities in the field. Bull. Environ. Contam. Toxicol. 86: 591-595.

Peters, A.; Merrington, G.; De Schamphelaere, K.; Delbeke, K. 2011b. Regulatory consideration of bioavailability for metals: Simplification of input parameters for the chronic copper biotic ligand model. Integr. Environ. Assess. Manage. 7: 437-444.

Peters, A.; Simpson, P.; Merrington, G.; Schlekat, C.; Rogevich-Garman, E. 2013. Assessment of the effects of nickel on benthic macroinvertebrates in the field. Environ. Sci. Pollut. Res. DOI 10.1007/s11356-013-1851-2.

The Netherlands. 2004. European Union risk assessment report on zinc metal, zinc(II) chloride, zinc sulphate, zinc distearate, zinc oxide, trizinc bis(orthophosphate). Prepared by The Netherlands, RIVM, on behalf of the European Union.

Tipping, E.; Corbishley, H.; Koprivnjak, J.; Lapworth, D.; Miller, M.; Vincent, C.; Hamilton-Taylor, J. 2009. Quantification of natural DOM from UV absorption at two wavelengths. Environ. Chem. 6: 472-476.