1. Blowes, D.W., Ptacek, C.J., Benner, S.G., Waybrant, K.R., Bain, J.G., 1998. Permeable reactive barriers for the treatment of mine tailings drainage water. In: Merkel, B., Helling, C. (Eds.), Proceedings of International Conference and Workshop Uranium Mining and Hydrogeology, vol. 2, Freiberg, Germany, pp. 113–119.
2. Hydrogeochemical characteristics of the Tinto and Odiel Rivers (SW Spain). Factors controlling metal contents;Cánovas;Sci. Total Environ.,2007
3. Standard Methods for the Examination of Water and Waste Water;Clesceri,1989
4. Davidson, C., 2003. Catchment Diagnostic Framework for the Klip River Catchment, Vaal barrage, October 1998–September 1999. Unpublished MSc Research Report, Univ. Witwatersrand, Johannesburg.
5. Acid mine drainage in the Iberian Pyrite Belt (Odiel River watershed, Huelva, SW Spain): geochemistry, mineralogy and environmental implications;Espana;Appl. Geochem.,2005