The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "understanding" appeared
2019-03-22 : Remarks at the ‘Challenges in Understanding the Monetary Transmission Mechanism’ conference2019-02-04 : The changing role of central banking
2016-04-25 : Distributed ledger technology - panacea or flash in the pan?
2016-02-04 : Policy needs, knowns and unknowns in the aftermath of the crisis