The webapp provides for each item the link on ECB's website.
Speeches for : Sabine Lautenschlager where "currency" appeared
2018-12-30 : Interview with Deutschlandfunk2017-06-30 : Stability and growth in the euro area – who plays the leading role?
2017-01-24 : The test of progress - Europe, the euro and the future
2016-05-02 : The euro - idea and reality
2014-11-29 : How innovative should central banks be?