Treaty establishing the European Economic Community (renamed as the Treaty on the Functioning of the European Union, as amended by Article 2 of the Lisbon Treaty), Rome, 25 March 1957, United Nations, Treaty Series, vol. 298, p. 11.
Single European Act, Luxembourg, 17 February 1986 and The Hague, 28 February 1986, United Nations, Treaty Series, vol. 1754, p. 3.