The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "functions" appeared
2002-05-09 : International Charlemagne Prize of Aachen for 20022001-05-18 : The European Central Bank, the Eurosystem and the European System of Central Banks
2000-05-22 : The future of banking supervision and the integration of financial markets
1998-01-30 : The role of the future European System of Central Banks