The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "speed" appeared
2020-06-25 : The World Economy Transformed2016-06-23 : Monetary policy in the euro area: scope, principles and limits
2015-10-14 : The future of Europe's financial market infrastructure: the Eurosystem's Vision 2020
2015-06-04 : Getting the balance right: innovation, trust and regulation in retail payments