(b) any other State invited to attend the United Nations Conference on the Elimination or Reduction of Future Statelessness; (c) any State to which an invitation to sign or to accede may be addressed by the General Assembly of the United Nations. 1. This Convention shall be ratified and the instruments of ratification shall be deposited with the Secretary-General of the United Nations. 2. This Convention shall be open for accession by the States referred to in paragraph 2 of this article. Accession shall be effected by the deposit of an instrument of accession with the Secretary-General of the United Nations. Article 17 1. At the time of signature, ratification or accession any State may make a reservation in respect of articles 11, 14 or 15. 2. No other reservations to this Convention shall be admissible. Article 18 1. This Convention shall enter into force two years after the date of the deposit of the sixth instrument of ratification or accession. 2. For each State ratifying or acceding to this Convention after the deposit of the sixth instrument of ratification or accession, it shall enter into force on the ninetieth day after the deposit by such State of its instrument of ratification or accession or on the date on which this Convention enters into force in accordance with the provisions of paragraph 1 of this article, whichever is the later. Article 19 1. Any Contracting State may denounce this Convention at any time by a written notification addressed to the Secretary-General of the United Nations. Such denunciation shall take effect for the Contracting State concerned one year after the date of its receipt by the Secretary-General. 2. In cases where, in accordance with the provisions of article 15, this Convention has become applicable to a non-metropolitan territory of a Contracting State, that State may at any time thereafter, with the consent of the territory concerned, give notice to the Secretary-General of the United Nations denouncing this Convention separately in respect of that territory. The denunciation shall take effect one year after the date of the receipt of such notice by the Secretary-General, who shall notify all other Contracting States of such notice and the date of receipt thereof. Article 20 1. The Secretary-General of the United Nations shall notify all Members of the United Nations and the non-member States referred to in article 16 of the following particulars: (a) signatures, ratifications and accessions under article 16; (b) reservations under article 17; (c) the date upon which this Convention enters into force in pursuance of article 18; (d) denunciations under article 19. 2. The Secretary-General of the United Nations shall, after the deposit of the sixth instrument of ratification or accession at the latest, bring to the attention of the General AsSmall Changes ‫ ـ‬Big Gains: An Action Plan to Prevent and Reduce Statelessness in the Kyrgyz Republic 121