The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "criteria" appeared
2006-02-24 : Europe's Hard Fix: The Euro Area2005-06-16 : European integration - achievements and challenges
2005-04-27 : The enlargement of the EU and the euro zone
2004-12-06 : Interview with Prof. Otmar Issing, (Delo, Slovenian daily newspaper)
2004-10-22 : EU enlargement and monetary integration
2003-02-27 : The euro - a stable international currency
1998-07-02 : Crisis prevention: IMF surveillance, need for new teeth?