The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "fluctuations" appeared
2000-12-19 : The euro: a new currency for Europe1999-11-05 : The euro and a dynamic Europe
1999-09-10 : Speech at the Swiss Banking Congress in Zurich
1998-12-03 : The role of monetary policy in economic policy
1998-11-27 : Keynote address on The European System of Central Banks, Current position and future prospects
1997-10-17 : 1999 - A new European monetary system