The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "new" appeared
2018-10-03 : The future started yesterday2017-07-25 : The ECB’s monetary policy stance
2017-05-08 : Monetary policy challenges for Europe: banking on the recovery
2013-11-15 : The overhaul of the architecture of the euro area and the return of investor confidence