Part VIII : Execution of the convention #Section III : Final provisions - Art. 91.
Art. 91. The present Convention shall be ratified as soon as possible.
The ratifications shall be deposited at Berne.
In respect of the deposit of each instrument of ratification, a ' procès-verbal ' shall be drawn up, and copy thereof, certified correct, shall be sent by the Swiss Federal Council to the Governments of all the countries on whose behalf the Convention has been signed or whose accession has been notified.