1. The Pesticide Manual;Tomlin,1997
2. EU Food Alert, 11 January 2001, http://www.pesticides.gov.uk/citizen/residues/other/rapidvarweb.htm.
3. Pesticides Residues Monitoring-Information Sheet April 2000: http://www.maff.gov.uk/aboutmaf/psd/psdhome.htm.
4. EU Food Alert, 13 December 2000, http://www.pesticides.gov.uk/citizen/residues/other/rapidvarweb.htm.