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2. Council Directive 91/676/EEC of 12 December 1991 concerning the protection of waters against pollution caused by nitrates from agricultural sources;Anon;Off. J. Eur. Commun.,1991
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4. Commission Regulation (EC) No 194/97 of 31 January 1997 setting maximum levels for certain contaminants in foodstuffs;Anon;Off. J. Eur. Commun.,1997b
5. Commission Regulation (EC) No 1881/2006 of 19 December 2006 maximum levels for certain contaminants in foodstuffs;Anon;Off. J. Eur. Commun.,2006