1. Council Directive of 28 September, 1981, on the approximation of the laws of the Member States relating to veterinary medicinal products (81/851/EEC). Official Journal of the European Communities, L 317/1
2. Council Directive of 28 September, 1981, on the approximation of the laws of the Member States relating to analytical, pharmaco-toxicological, and clinical standards and protocols in respect of the testing of veterinary medicinal products (81/852/EEC). Official Journal of the European Communities, L 317/16
3. Council Directive 70/524/EEC concerning additives in feedingstuffs. Official Journal of the European Communities, 270/1
4. Council Directive of 16 February, 1987, fixing guidelines for the assessment of additives in animal nutrition (87/153/EEC). Official Journal of the European Communities, No L 64/19