The webapp provides for each item the link on ECB's website.
Speeches for : Sabine Lautenschlager where "waiting" appeared
2018-12-30 : Interview with Deutschlandfunk2017-09-15 : Monetary policy – what’s next?
Speeches for : Sabine Lautenschlager where "waiting" appeared
2018-12-30 : Interview with Deutschlandfunk