The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "sources" appeared
2001-12-13 : ECB press conference on the occasion of the Signing of the Agreement between the European Central Bank and Europol2001-11-14 : The introduction of the euro, the regions and the accession process
1998-12-03 : The role of monetary policy in economic policy
1997-10-14 : Monetary stability and economic growth or: Why stable prices are good for private enterprise in France and the Netherlands