Article 13

(1) This Convention shall be signed in a single copy in English, French, Russian and Spanish, the four texts being equally authentic.

(2) Official texts shall be established by the Director General of the World Intellectual Property Organization, after consultation with the interested Governments, in the Arabic, Dutch, German, Italian and Portuguese languages.

(3) The Secretary-General of the United Nations shall notify the Director General of the World Intellectual Property Organization, the Director-General of the United Nations Educational, Scientific and Cultural Organization and the Director-General of the International Labour Office of:

(a) signatures to this Convention;

(b) the deposit of instruments of ratification, acceptance of accession;

(c) the date of entry into force of this Convention;

(d) any declaration notified pursuant to Article 11, paragraph (3);

(e) the receipt of notifications of denunciation.

(4) The Director General of the World Intellectual Property Organization shall inform the States referred to in Article 9, paragraph (1), of the notifications received pursuant to the preceding paragraph and of any declarations made under Article 7, paragraph (4). He shall also notify the Director-General of the United Nations Educational Scientific and Cultural Organization and the Director-General of the International Labour Office of such declarations.

(5) The Secretary-General of the United Nations shall transmit two certified copies of this Convention to the States referred to in Article 9, paragraph (1).

IN WITNESS WHEREOF, the undersigned, being duly authorized, have signed this Convention.

DONE at Geneva, this twenty-ninth day of October 1971.