The webapp provides for each item the link on ECB's website.
Speeches for : Christian Noyer where "maastricht" appeared
2002-02-07 : Introductory statement with Q&A2001-01-17 : Some ECB views on the accession process
1999-05-03 : Politics and central banks
1998-10-01 : L'euro: une monnaie unique pour l'Europe