Article 4 Transposition
1. Member States shall adopt and publish the laws, regulations and administrative provisions necessary to comply with this Directive before 20 April 2006. They shall forthwith inform the Commission thereof.
2. They shall apply those measures from 21 April 2006.
3. When Member States adopt those measures, they shall contain a reference to this Directive or be accompanied by such a reference on the occasion of their official publication. The methods of making such reference shall be laid down by Member States.
4. Member States shall communicate to the Commission the texts of the main provisions of national law, which they adopt in the field covered by this Directive.