1. The Background and the Need for Change, http://www.pesticides.gov.uk/environment.asp?id=1523, The Pesticides Safety Directorate, York, United Kingdom.
2. Proposed PAHO/WHO Plan of Action for Technical Cooperation in Food Safety, 2006–2007, ftp://ftp.fao.org/docrep/fao/meeting/010/af272e.pdf.
3. The Applicant Guide: Maximum Residue Levels, http://www.pesticides.gov.uk/au_environment.asp?id=1251, The Pesticides Safety Directorate, York, United Kingdom.
4. Pesticides and the Environment, A Strategy for the Sustainable Use of Plant Protection Products and Strategy Action Plans, http://www.pesticides.gov.uk/uploadedfiles/Web_Assets/PSD/PB11721_Pesticidesenvironment_Lo.pdf, Department for Environment, Food and Rural Affairs, London, United Kingdom.
5. Status of active substances under EU review (doc. 3010), http://europa.eu.int/comm/food/plant/protection/evaluation/stat_active_subs_3010_en.xls.