Artikel 15

1. This Convention shall enter into force on the first day of the third month following the date on which the Government of the French Republic has received signatures and, if required, instruments of ratification, acceptance or approval from twenty-two ECAC Member States.
2. For each State ratifying, accepting, approving or acceding to this Convention after its entry into force, this Convention shall enter into force for that State on the first day of the third month after the deposit of its instrument of ratification, acceptance, approval or accession to the Government of the French Republic.