The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "theory" appeared
2018-05-04 : Past and future of the ECB monetary policy2017-11-24 : Ricardo Reis’ contribution to Macroeconomics
2016-06-15 : The challenge of low real interest rates for monetary policy
2016-04-13 : International headwinds and the effectiveness of Monetary Policy
2013-09-27 : Deutsche Bank Prize attribution to Raghuram Rajan
2012-11-26 : Completing and Repairing EMU
2012-06-28 : 2011 Bernácer Prize Award Ceremony in honour of Lasse Heje Pedersen
2010-12-07 : The future of economic governance in Europe in a global perspective