1. Analytical Methods for Residues of Pesticides,1988
2. P. van Zoonen (Ed.), Analytical Methods for Pesticides Residues in Foodstuffs, 6th edition, The Inspectorate for Health Protection, Ministry of Public Health, Welfare and Sport, Drukkerij T.O. Offset B.V, Maasstricht, The Netherlands, 1996.
3. European Union Council directive 80/778/EEC (1980).
4. European Union Council directive 91/414/EEC (1991).
5. Anonymous, Monitoring for pesticides residues in the European Union and Norway report 1996, EU-Directorate General XXIV, internal report, 1998.