The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "literature" appeared
2017-11-24 : Ricardo Reis’ contribution to Macroeconomics2016-04-13 : International headwinds and the effectiveness of Monetary Policy
2013-09-24 : 2012 Bernácer prize award ceremony in honour of Nicholas Bloom
2011-10-10 : Contagion and the European debt crisis