The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "led" appeared
2006-03-24 : The euro - a currency without a state2006-01-18 : Communication and transparency - how do central banks meet these demands?
2004-06-10 : On the primacy of price stability
2004-05-12 : Summary of “The ECB and the euro - the first five years”
2000-11-07 : The New Economy - a European view
1999-05-27 : Hayek - currency competition and European Monetary Union
1998-10-06 : Monetary policy in EMU