Artikel 21

1. Any State may, at the time of signature or when depositing its instrument of ratification, acceptance, approval or accession, declare that it avails itself of one or more reservations in respect of Article 6 and Article 10, paragraph 1, sub-paragraph a. No other reservation may be made.
2. Any Party which has made a reservation under the preceding paragraph may wholly or partly withdraw it by means of a notification addressed to the Secretary General of the Council of Europe. The withdrawal shall take effect on the date of receipt of such notification by the Secretary General.
3. A Party which has made a reservation in respect of a provision of this Convention may not invoke the application of that provision by any other Party; it may, however, if its reservation is partial or conditional, invoke the application of that provision insofar as it has itself accepted it.