1. Commission Decision 2002/657/EC (12 August 2002) implementing Council Directive 96/23/EC concerning the performance of analytical methods and the interpretation of results, Official Journal of the European Communities, 17.8.2002, L 221/8.
2. European Agency for the Evaluation of Medicinal Products, Veterinary Medicines and Inspections, EMEA/MRL/835/02-FINAL, April 2002. http://www.emea.eu.int/pdfs/vet/mrls/083502en.pdf
3. Council Regulation 2377/90 (26 June 1990) laying down a Community procedure for the establishment of maximum residue limits of veterinary medicinal products in foodstuffs of animal origin, Official Journal of the European Communities, 18.8.1990, L 224.
4. Confirmatory assay for the simultaneous detection of penicillins and cephalosporins in milk using liquid chromatography/tandem mass spectrometry
5. Determination of cephalosporins in raw bovine milk by high-performance liquid chromatography