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The present Convention shall be open for signature by all States until 28 February 1979 at the Federal Ministry for Foreign Affairs of the Republic of Austria, and subsequently, until 31 August 1979, at United Nations Headquarters in New York. Article 47 Ratification The present Convention is subject to ratification. The instruments of ratification shall be deposited with the Secretary-General of the United Nations.

The present Convention shall remain open for accession by any State. The instruments of accession shall be deposited with the Secretary-General of the United Nations.

1. The present Convention shall enter into force on the thirtieth day following the date of deposit of the fifteenth instrument of ratification or accession.

2. For each State ratifying or acceding to the Convention after the deposit of the fifteenth 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.

The original of the present Convention, of which the Arabic, Chinese, English, French, Russian and Spanish texts are equally authentic, shall be deposited with the Secretary-General of the United Nations.

IN WITNESS WHEREOF the undersigned Plenipotentiaries, being duly authorized thereto by their respective Governments, have signed the present Convention.

DONE at Vienna this twenty-third day of August, one thousand nine hundred and seventy-eight.