to the movement of goods within the Community, endeavour to take all appropriate measures for the solution of any practical problem which may arise in connection with trade between Turkey and countries linked to the Community by an association agreement or a preferential agreement.Where such measures have not been taken, the Council of Association may adopt the necessary provisions for ensuring the proper functioning of the Association.Article 55Consultations shall take place in the Council of Association on the implementation of 'Regional Cooperation for Development' (RCD).The Council of Association may adopt any necessary provisions. These must not impede the proper functioning of the Association.Article 56In the event of a third State acceding to the Community, appropriate consultations shall take place in the Council of Association so as to ensure that account can be taken of the mutual interests of the Community and Turkey stated in the Agreement of Association.TITLE IVGENERAL AND FINAL PROVISIONSArticle 57The Contracting Parties shall progressively adjust the conditions for participation in contracts awarded by public authorities and public undertakings, and by private undertakings which have been granted special or exclusive rights, so that by the end of the period of twenty-two years there is no discrimination between nationals of Member States and nationals of Turkey established in the territory of the Contracting Parties.The Council of Association shall determine the timetable and rules for this adjustment; when doing so it shall be guided by the solutions adopted by the Community in this field.Article 58In the fields covered by this Protocol:- the arrangements applied by Turkey in respect of the Community shall not give rise to any discrimination between Member States, their nationals or their companies or firms;- the arrangements applied by the Community in respect of Turkey shall not give rise to any discrimination between Turkish nationals or Turkish companies or firms.Article 59In the fields covered by this Protocol Turkey shall not receive more favourable treatment than that which Member States grant to one another pursuant to the Treaty establishing the Community.Article 601. If serious disturbances occur in a sector of the Turkish economy or prejudice its external financial stability, or if difficulties arise which adversely affect the economie situation in a region of Turkey, Turkey may take the necessary protective measures.The Council of Association shall be notified immediately of those measures and of the rules for their application.2. If serious disturbances occur in a sector of the economy of the Community or of one of more Member States, or prejudice the external financial stability of one or more Member States, or if difficulties arise which adversely affect the economic situation in a region of the Community, the Community may take, or authorize the Member State or States concerned to take, the necessary protective measures.The Council of Association shall be notified immediately of such measures and of the rules for their application.3. In the choice of measures to be taken in pursuance of paragraphs 1 and 2, preference shall be given to those which will least disturb the functioning of the Association. These measures shall not exceed what is strictly necessary to remedy the difficulties that have arisen.4. Consultations may take place in the Council of Association on the measures taken in pursuance of paragraphs 1 and 2.Article 61Without prejudice to the special provisions of this Protocol, the transitional stage shall be twelve years.Article 62This Protocol and the Annexes thereto shall form an integral part of the Agreement establishing an Association between the European Economic Community and Turkey.Article 631. This Protocol shall be ratified by the Signatory States in accordance with their respective constitutional requirements and shall be validly concluded on behalf of the Community by a decision of the Council, taken in accordance with the provisions of the Treaty establishing the Community; the decision shall be notified to the Contracting Parties to the Agreement establishing an Association between the European Economic Community and Turkey.The instruments of ratification and the notification of conclusion shall be exchanged at Brussels.2. This Protocol shall enter into force on the first day of the month following the date of the exchange of the instruments of ratification and of the notification mentioned in paragraph 1.3. If this Protocol does not enter into force at the beginning of a calendar year, the Council of Association may shorten or lengthen the periods laid down in this Protocol, in particular those in which free movement of goods is to be achieved, so that they may terminate at the end of a calendar year.Article 64This Protocol is drawn up in two copies in the Dutch, French, German, Italian and Turkish languages, each of these texts being equally authentic.In witness whereof, the undersigned Plenipotentiaries have signed this Additional Protocol.Done at Brussels on the twenty-third day of November in the year one thousand nine hundred and seventy.For His Majesty the King of the Belgians,Pierre HARMELFor the President of the Federal Republic of Germany,Walter SCHEELFor the President of the French Republic,Maurice SCHUMANNFor the President of the Italian Republic,Mario PEDINIFor His Royal Highness the Grand Duke of Luxembourg,Gaston THORNFor Her Majesty the Queen of the Netherlands,J. M. A. H. LUNSFor the Council of the