The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "happen" appeared
2018-11-22 : Interview with Handelsblatt2018-11-02 : Interview with BdP Revista, staff magazine of Banco de Portugal
2017-03-24 : Interview with VDI Nachrichten
2014-07-15 : Interview with Les Echos