The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "series" appeared
2005-10-28 : The role of money in the monetary policy strategy of the ECB2005-06-03 : The monetary pillar of the ECB
2002-12-09 : Monetary policy in a world of uncertainty
1999-12-03 : The monetary policy of the ECB in a world of uncertainty