1. Archer, M. J. G., & Caldwell, R. A. (2004). Response of six Australian plant species to heavy metal contamination at an abandoned mine site. Water, Air, and Soil Pollution, 157, 257–267.
2. Barnatt, J., & Penny, R. (2004). The lead legacy: the prospects for the peak district’s lead mining heritage. UK: The Peak District National Park Authority, English Heritage, English Nature.
3. Booker, F. (1971). The Industrial Archaeology of the Tamar Valley. Newton Abbott: David & Charles.
4. Commission of the European Communities (2006). Proposal for a Directive of the European Parliament and the Council on Environmental Quality Standards in the Field of Water Policy and Amending Directive 200/60/EC. Commission of the European Communities, Brussels.
5. Conesa, H. M., Schulin, R., & Nowack, B. (2007). Mining landscape: a cultural tourist opportunity or an environmental problem? Ecological Economics. In press.