Artikel 40

1. This Convention, of which the Chinese, English, French, Russian and Spanish texts are equally authentic, shall be open for signature until 1 August 1961 on behalf of any Member of the United Nations, of any non-member State which is a Party to the Statute of the International Court of Justice or member of a specialized agency of the United Nations, and also of any other State which the Council may invite to become a Party.
2. This Convention is subject to ratification. The instruments of ratification shall be deposited with the Secretary-General.
3. This Convention shall be open after 1 August 1961 for accession by the States referred to in paragraph 1. The instruments of accession shall be deposited with the Secretary-General.