Article 24

1. This Convention shall be subject to ratification or acceptance by the signatory States.

2. This Convention shall be open for accession by any State invited to the Conference referred to in Article 23, and by any State Member of the United Nations, provided that in either case such State is a party to the Universal Copyright Convention or a member of the International Union for the Protection of Literary and Artistic Works.

3. Ratification, acceptance or accession shall be effected by the deposit of an instrument to that effect with the Secretary-General of the United Nations.