1. P. Hughes, J. Heritage, Antibiotic Growth-Promoters in Food Animals, http://www.fao.org/docrep/article/agrippa/555_en.htm (accessed November 2009).
2. Council Regulation (EEC) No. 2377/90 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, Off. J. L 224 (June 1990) 1.
3. General Principles for Evaluating the Safety of Compounds Use in Food-Producing Animals;U.S. Food and Drug Administration (FDA),1986
4. Commission Staff Working Document on the implementation of national residue monitoring plans in the Member States in 2006 (Council Directive 96/23/EC), (Brussels, 6.8.2008) SEC (2008) 2375.
5. European Decision (EC) No. 2002/657/EC of 12 August 2002 implementing Council Directive 96/23/EC concerning the performance of analytical methods and the interpretation of results, Off. J. L 221 (August 2002) 8.