TREATY ESTABLISHING THE EUROPEAN ECONOMIC COMMUNITY, PART TWO - FOUNDATIONS OF THE COMMUNITY, TITLE III - FREE MOVEMENT OF PERSONS, SERVICES AND CAPITAL, CHAPTER 2: RIGHT OF ESTABLISHMENT, ARTICLE 57
TREATY ESTABLISHING THE EUROPEAN ECONOMIC COMMUNITY, PART TWO - FOUNDATIONS OF THE COMMUNITY, TITLE III - FREE MOVEMENT OF PERSONS, SERVICES AND CAPITAL, CHAPTER 3: SERVICES, ARTICLE 66