The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "nature" appeared
2015-01-31 : Monetary policy challenges in the euro area2014-11-03 : Thomas Philippon's contribution to macro-finance
2012-06-14 : Financial Stability: Methodological advances and policy issues
2012-06-04 : Opening remarks at the third conference on accounting, financial reporting and corporate governance for central banks
2010-11-16 : Regulation and Supervision of Financial Services in Europe - Reforms and Results