Artikel 29

1. This Convention shall enter into force on the ninetieth day after the date of the deposit with the Secretary-General of the twentieth instrument of ratification, acceptance, approval or accession by States or by Namibia, represented by the Council for Namibia.
2. For each State or for Namibia, represented by the Council for Namibia, ratifying, accepting, approving or acceding to this Convention after the deposit of the twentieth instrument of ratification, acceptance, approval or accession, the Convention shall enter into force on the ninetieth day after the date of the deposit of its instrument of ratification, acceptance, approval or accession.
3. For each regional economic integration organization referred to in article 26, subparagraph (c) depositing an instrument relating to an act of formal confirmation or an instrument of accession, this Convention shall enter into force on the ninetieth day after such deposit, or at the date the Convention enters into force pursuant to paragraph 1 of this article, whichever is later.