The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "legitimacy" appeared
2017-09-04 : Aligning accountability with sovereignty in the European Union: the ECB’s experience2016-09-03 : Introductory remarks for the discussion panel ‘The Future of the Euro'
2016-06-29 : Opening remarks at the Academy of European Law
2015-11-16 : “A currency beyond the nation state: The euro and its institutional challenges ahead”
2015-10-13 : Speech at MNI Connect event
2015-04-24 : Dinner speech at EUI-NOMICS