Council Directive 66/162/EEC of 28 February 1966 concerning the attainment of freedom of establishment and freedom to provide services in respect of activities of self-employed persons engaging in the provision of electricity, gas, water and sanitary services (ISIC Division 5)
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 54
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 63