The webapp provides for each item the link on ECB's website.
Speeches for : Lorenzo Bini Smaghi where "powers" appeared
2011-03-11 : Whither Europe after the crisis?2011-02-10 : Monetary Union, Regulation and Supervision
2011-01-10 : The International Monetary System: Towards a New Era
2010-11-01 : The Challenges Facing the Euro Area
2009-02-12 : Regulation and supervisory architecture: Is the EU on the right path?
2008-09-25 : Celebrating 50 years of Europe