1. Commission of the European communities, Communication from the commission on the precautionary principle COM, 1 Brussels, Belgium, 2000.
2. Official Journal of the European Union, C340, Treaty of Amsterdam Article 152, Brussels, Belgium, 1997.
3. Official Journal of the European Union, L22418 August 1990 Council Regulation 2377/90/EC of 26 June 1990 laying down a Community procedure for the establishment of maximum residue limits of veterinary medicinal products in foodstuffs of animal origin, Brussels, Belgium, 1990.
4. Official Journal of the European Union, L12523/05/1996, Council Directive 96/22/EC of 29 April 1996 concerning the prohibition on the use in stockfarming of certain substances having a hormonal or thyrostatic action and of beta-agonists, and repealing Directives 81/602/EEC, 88/146/EEC and 88/299/EEC, pp. 3–9, Brussels, Belgium, 1996.
5. Official Journal of the European Union, L125, 23/05/1996, Council Directive 96/23/EC of 29 April 1996 on measures to monitor certain substances and residues thereof in live animals and animal products and repealing Directives 85/358/EEC and 86/469/EEC and Decision 89/187/EEC and 91/664/EEC, pp. 10–32, Brussels, Belgium, 1996.