ETS 148 – Regional or Minority Languages, 5.XI.1992 __________________________________________________________________________________ Part V – Final provisions Article 18 This Charter shall be open for signature by the member States of the Council of Europe. It is subject to ratification, acceptance or approval. Instruments of ratification, acceptance or approval shall be deposited with the Secretary General of the Council of Europe. Article 19 1 This Charter shall enter into force on the first day of the month following the expiration of a period of three months after the date on which five member States of the Council of Europe have expressed their consent to be bound by the Charter in accordance with the provisions of Article 18. 2 In respect of any member State which subsequently expresses its consent to be bound by it, the Charter shall enter into force on the first day of the month following the expiration of a period of three months after the date of the deposit of the instrument of ratification, acceptance or approval. Article 20 1 After the entry into force of this Charter, the Committee of Ministers of the Council of Europe may invite any State not a member of the Council of Europe to accede to this Charter. 2 In respect of any acceding State, the Charter shall enter into force on the first day of the month following the expiration of a period of three months after the date of deposit of the instrument of accession with the Secretary General of the Council of Europe. Article 21 1 Any State may, at the time of signature or when depositing its instrument of ratification, acceptance, approval or accession, make one or more reservations to paragraphs 2 to 5 of Article 7 of this Charter. No other reservation may be made. 2 Any Contracting State 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. Article 22 1 Any Party may at any time denounce this Charter by means of a notification addressed to the Secretary General of the Council of Europe. 2 Such denunciation shall become effective on the first day of the month following the expiration of a period of six months after the date of receipt of the notification by the Secretary General. Article 23 The Secretary General of the Council of Europe shall notify the member States of the Council and any State which has acceded to this Charter of: a any signature; b the deposit of any instrument of ratification, acceptance, approval or accession; 13