The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "contributed" appeared
2003-04-02 : Address on the occasion of an audience by Dr. Carlo Azeglio Ciampi, President of the Italian Republic preceding the meeting of the Governing Council of the European Central Bank in Rome2002-07-02 : Presentation of the ECB's Annual Report 2001 to the European Parliament
2002-03-15 : The introduction of the euro: a (critical) retrospect and a preview
2000-05-12 : Official celebration of the 150th anniversary of the Nationale Bank van Belgiƫ/Banque Nationale de Belgique (National Bank of Belgium)