The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "slowdown" appeared
2019-03-29 : Interview with Bloomberg TV2019-02-18 : Interview with Börsen-Zeitung
2018-05-14 : Economic developments in the euro area
2018-05-07 : Economic developments in the euro area
2017-01-20 : Is secular stagnation the new economic reality?
2016-09-20 : Interview with L'Opinion
2016-07-01 : Transmission channels of monetary policy in the current environment