The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "nominal" appeared
2017-09-01 : The role of cash: Customer retention and tie to the citizen2017-04-28 : Why Europe Still Needs Cash
2016-01-27 : Current developments in the German banking market
2015-12-03 : Auf neuen Wegen zum alten Ziel