1. Member States shall take, before 1 January 1993, the measures necessary to comply with this Directive. The Kingdom of Spain shall take these measures not later than 30 June 1995. The Hellenic Republic and the Portuguese Republic shall take these measures not later than 30 June 1997. They shall forthwith inform the Commission thereof.

When Member States adopt these measures, they shall contain an 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.

2. Member States shall bring into force the measures referred to in paragraph 1 on the same dates as those (laid down in Directive 90/531/EEC).

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