The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "constitutional" appeared
2020-07-02 : In the spirit of European cooperation2016-02-16 : Oral hearing of the Federal Constitutional Court 16 February 2016 in the OMT proceedings
2015-11-16 : “A currency beyond the nation state: The euro and its institutional challenges ahead”
2014-05-14 : Keynote speech