ARTICLE 27
Entry into Force
(1) This Agreement shall be ratified in either of Contracting State in accordance with their laws and regulations and the instruments of ratification shall be exchanged as soon as possible.
(2) The Agreement shall enter into force upon the exchange of instruments of ratification and its provisions shall have effect in respect of any portion of income, that is earned or exist on the beginning of or after the calendar year following the year in which this Agreement have entered into force.