The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "joint" appeared
2001-05-18 : The European Central Bank, the Eurosystem and the European System of Central Banks1998-12-31 : Statement at the joint press conference following the ECOFIN meeting
1998-01-19 : EMU: many countries - one monetary system
1998-01-16 : EMU: the building of one monetary system in the European Union