Article 33
This Convention shall be open for accession by any States belonging to any. of the categories mentioned in article 31. The instruments of accession shall be deposited with the Secretary-General of the United Nations.
Article 34
1. This Convention shall come into force on the thirtieth day following the date of deposit of the twenty-second instrument of ratification or accession with the Secretary-General of the United Nations.
2. For each State ratifying or acceding to the Convention after the deposit of the twenty-second instrument of ratification or accession, the Convention shall enter into force on the thirtieth day after deposit by such State of its instrument of ratification or accession.
Article 35
1. After the expiration of a period of five years from the date on which this Convention shall enter into force, a request for the revision of this Convention may be made at any time by any Contracting Party by means of a notification in writing addressed to the Secretary-General of the United Nations.
2. The General Assembly of the United Nations shall decide upon the steps, if any, to be taken in respect of such request.
Article 36
The Secretary-General of the United Nations shall inform all States Members of the United Nations and the other States referred to in article 31:
(a) Of signatures to this Convention and of the deposit of instruments of ratification or accession, in accordance with articles 31, 32 and 33;
(b) Of the date on which this Convention will come into force, in accordance with article 34;
(c) Of requests for revision in accordance with article 35.
Article 37
The original of this Convention, of which the Chinese, English, French, Russian and Spanish texts are equally authentic, shall be deposited with the
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