1. The benefits and costs of riparian analysis habitat preservation: a willingness to accept/willingness to pay contingent valuation approach;Amigues;Ecological Economics,2002
2. Economic Valuation with Stated Preference Techniques—A Manual;Bateman,2002
3. Applied Environmental Economics. A GIS Approach to Cost–Benefit Analysis;Bateman,2003
4. Environment Agency (EA), 1998. Local environment agency plan—Wye area. Consultation Report November 1998, Environment Agency Wales, St. Mellons, Cardiff.
5. Environment Agency (EA), 2002a. Agriculture and natural resources: benefits, costs and potential solutions. [online] Available at: www.environment-agency.gov.uk/.