The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "considerable" appeared
2002-03-20 : Testimony before the Committee on Economic and Monetary Affairs of the European Parliament2001-05-11 : The European Monetary Union in a globalised world
1999-12-03 : The monetary policy of the ECB in a world of uncertainty
1998-07-02 : Crisis prevention: IMF surveillance, need for new teeth?