The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "hans" appeared
2011-02-11 : The essence of Economic and Monetary Union2010-03-26 : Laudatio for Hans Tietmeyer
2008-01-12 : The successful entry of Malta into the euro area
2006-10-16 : How to elevate the potential growth rate of Europe