Artikel 6

1. This Convention shall come into force on the ninetieth day after five of the countries referred to in article 5, paragraph 1, have signed it without reservation of ratification or have deposited their instruments of ratification or accession.
2. For any country ratifying or acceding to it after five countries have signed it without reservation of ratification or have deposited their instruments of ratification or accession, this Convention shall enter into force on the ninetieth day after the said country has deposited its instrument of ratification or accession.