The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "intergovernmental" appeared
2018-11-22 : Europe: a work in progress – political integration and economic convergence in Monetary Union2018-07-05 : Deepening EMU – political integration and economic convergence
2017-09-14 : Economic and financial priorities for relaunching the Eurozone and the EU
2015-11-16 : “A currency beyond the nation state: The euro and its institutional challenges ahead”
2015-04-24 : Dinner speech at EUI-NOMICS