The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "symmetric" appeared
1999-11-05 : Economic divergences in the euro area: the consequences for economic policies1998-12-22 : Introductory statement with Q&A
1998-12-22 : Introductory statement with Q&A
1997-11-14 : Conditions for the success of EMU
1997-10-17 : 1999 - A new European monetary system