Evropská komise. Communication from the Commission to the European Parliament and the Council – Codification of the Acquis communautaire [online]. 2001-11-21 [cit. 2013-05-13]. Dostupné online. (anglicky)
Jacques Rupnik, Timothy Garton Ash, Michael Mertes, Aleksander Smolar. Who Will Speak For The Larger Europe? [online]. Project Syndicate, 2000-09-21 [cit. 2013-05-13]. Dostupné online. (anglicky)