The webapp provides for each item the link on ECB's website.
Speeches for : Jurgen Stark where "source" appeared
2008-11-18 : Monetary, fiscal and financial stability in Europe2008-04-24 : The contribution of monetary and financial statistics to the conduct of monetary policy
2008-01-16 : Knowns and unknowns about the creation of economic wealth in the euro area
2006-09-29 : The role of central banks in economic and personal finance education