The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "option" appeared
2006-02-24 : Europe's Hard Fix: The Euro Area2005-04-27 : The enlargement of the EU and the euro zone
2004-10-22 : EU enlargement and monetary integration
2004-06-10 : On the primacy of price stability
2003-02-28 : Considerations on monetary policy strategies for accession countries