Artikel 24

This Convention shall remain in force for a period of two years from the date of its entry into force in accordance with paragraph (b) of Article 21. Thereafter it shall remain in force from year to year for such Contracting Parties as have not denounced it by a notification to that effect addressed to the Secretary-General of the Council of Europe at least six months before the expiry either of the preliminary two-year period or of any subsequent yearly period. Such notification shall take effect at the end of the period to which it relates.