1. Abrahim, G. M. S., & Parker, R. J. (2008). Assessment of heavy metal enrichment factors and the degree of contamination in marine sediments from Tamaki Estuary, Auckland, New Zealand. Environmental Monitoring and Assessment, 136, 227–238.
2. AIQB. (2010). Asociación de Industrias Químicas y Básicas de Huelva. http://www.aiqb.es . Accessed 15 Nov 2010.
3. Allen, A., Da Silva, N. L. A., & Corubolo, E. (1999). Environmental problems and opportunities of the peri-urban interface and their impact upon the poor. Strategic Environmental Planning and Management for the Peri-urban Interface. Peri-urban Interface Project. Development Planning Unit, University College London, p. 43.
4. ASTM, American Society for Testing and Materials. (1999). RBCA fate and transport models: Compendium and selection guidance. West Conshohocken PA. http://www.epa.gov/oust/rbdm/rbcafntm.pdf . Accessed 15 April 2011.
5. ASTM, American Society for Testing and Materials. (2000). Standard guide for risk based corrective action. West Conshohocken PA. Report E-2081-00.