The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "simple" appeared
2006-01-18 : Communication and transparency - how do central banks meet these demands?2005-06-03 : The monetary pillar of the ECB
2003-02-28 : Considerations on monetary policy strategies for accession countries
2002-08-30 : Monetary Policy in a Changing Economic Environment
2000-06-26 : Communication challenges for the ECB