The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "observe" appeared
2006-05-05 : The watchers conference: Theory and practice of monetary policy2005-08-09 : Interview with Il Sole 24 Ore
2005-05-20 : One size fits all! A single monetary policy for the euro area
2002-10-25 : Second ECB Central Banking Conference 24-25 October 2002, Frankfurt am Main
2000-09-29 : Monetary policy in a new environment
2000-06-26 : Communication challenges for the ECB
1999-12-03 : The monetary policy of the ECB in a world of uncertainty