Artikel 13

1. This Convention shall be open for signature until 31 December 1956 on behalf of any Member of the United Nations, any non-member State which is a Party to the Statute of the International Court of Justice, or member of a specialized agency, and any other non-member State which has been invited by the Economic and Social Council to become a Party to the Convention.
2. This Convention shall be ratified. The instruments of ratification shall be deposited with the Secretary-General.
3. This Convention may be acceded to at any time on behalf of any of the States referred to in paragraph 1 of this article. The instruments of accession shall be deposited with the Secretary-General.