1. Treaty establishing the European Economic Community, Rome, 1957, https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A11957E%2FTXT
2. Single European Act, OJ L 169, 29.6.1987, p. 1-28
3. Treaty on European Union, Title V, OJ C 191, 29.7.1992, p. 1-112
4. Treaty of Amsterdam amending the Treaty on European Union, the Treaties establishing the European Communities and certain related acts, OJ C 340, 10.11.1997, p. 1-144
5. Draft Treaty establishing a Constitution for Europe, OJ C 169, 18.7.2003, p. 1-150