This Treaty shall be ratified by the High Contracting Parties in accordance with Their respective constitutional requirements. The instruments of ratification shall be deposited with the Government of the Italian Republic.
This Treaty shall enter into force on the first day of the month following the deposit of the instrument of ratification by the last signatory State to take this step.
This Treaty, drawn up in a single original in the Dutch, French, German and Italian languages, all four texts being equally authentic, shall be deposited in the archives of the Government of the Italian Republic, which shall transmit a certified copy to each of the governments of the other signatory States.
IN WITNESS WHEREOF, the undersigned Plenipotentiaries have signed this Treaty.
Done at Brussels this eighth day of April in the year one thousand nine hundred And sixty-five.
Pour Sa Majest, le roi des Belges
Voor Zijne Majesteit de Koning der Belgen
Paul Henri SPAAK
Fr*** den Presidenten der Bundesrepublik Deutschland
Pour le president de la Republique francaise
Maurice COUVE DE MURVILLE
Per il Presidente della Repubblica italiana
Pour Son Altesse Royale le grand duc de Luxembourg
* "غير واضح"