The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "alia" appeared
2017-06-22 : Interview with Der Spiegel2016-12-20 : Interview with the Telegraaf
2015-06-15 : Structural reforms and long-run growth in the euro area
2015-03-25 : Interview with Il Sole 24 Ore
2013-12-22 : Interview with La Stampa