The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "entity" appeared
2003-10-22 : Maastricht and the future of Europe2002-05-08 : What are the political consequences of the euro?
1999-09-04 : Speech at the Villa d'Este Workshop - Cernobbio
1998-12-31 : Statement at the joint press conference following the ECOFIN meeting