The webapp provides for each item the link on ECB's website.
Speeches for : Sabine Lautenschlager where "investor" appeared
2018-05-29 : Monetary policy - end of history?2018-03-15 : The banks and the market
2017-09-18 : Regulation, supervision and market discipline – striking a balance
2017-03-13 : Walled off? Banking regulation after the crisis
2017-01-24 : The test of progress - Europe, the euro and the future
2015-11-23 : Stormy times - how is the ECB handling them?
2015-04-02 : Interview with Wirtschaftswoche