The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "similar" appeared
2019-09-02 : Money and private currencies: reflections on Libra2018-02-08 : Interview with Bloomberg
2016-04-09 : Scope and Limits of Monetary Policy
2014-04-17 : Launching the ECB-coordinated technical cooperation with central banks of the Western Balkan