1. Official Journal of the European Union, L224 of 18 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.
2. Official Journal of the European Communities, L224 of 18 August 1990, Council Regulation 2377/90/EC, consolidated version of the Annexes I to IV updated up to 22.12.2004 obtained from http://www.emea.eu.int.
3. Review of methodology for the determination of benzimidazole residues in biological matrices
4. Analytical strategies for residue analysis of veterinary drugs and growth-promoting agents in food-producing animals—a review