Article 20

Member States shall bring into force the laws, regulations and administrative provisions necessary to comply with Articles 12 (2) and 17 by 1 January 1993 and with the other requirements of this Directive before 1 January 1994. They shall forthwith inform the Commission thereof.

When these measures are adopted by the Member States, they shall contain a reference to this Directive or shall be accompanied by such reference on the occasion of their official publication. The methods of making such a reference shall be laid down by the Member States.

Member States shall communicate to the Commission the texts of the main provisions of national law which they adopt in the field governed by this Directive.

The setting of the deadline for transposition into national law at 1 January 1994 shall be without prejudice to the abolition of veterinary checks at frontiers provided for by Directives 89/662/EEC and 90/425/EEC.