Neil WALKER (ed.), Europe's Area of Freedom, Security, and Justice, 2004, XIII/2, 3-40, Collected courses of the Academy of European LawCollected Courses of the Academy of European Law, [AEL]
WALKER, Neil, In Search of the Area of Freedom, Security and Justice: A Constitutional Odyssey, in Neil WALKER (ed.), Europe's Area of Freedom, Security, and Justice, 2004, XIII/2, 3-40, Collected courses of the Academy of European LawCollected Courses of the Academy of European Law, [AEL] - https://hdl.handle.net/1814/2985