The webapp provides for each item the link on ECB's website.
Speeches for : Gertrude Tumpel-Gugerell where "differentials" appeared
2007-11-26 : The euro - benefits and challenges2005-09-30 : Press briefing: Presentation of indicators of financial integration in the euro area
2003-11-14 : ECB's monetary policy issues in the run-up to enlargement