The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "incentive" appeared
2014-12-19 : Where to from here?2014-11-03 : Thomas Philippon's contribution to macro-finance
2012-06-04 : Opening remarks at the third conference on accounting, financial reporting and corporate governance for central banks
2011-11-23 : The Future of the International Monetary System