The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "lette" appeared
2003-07-10 : Introductory statement with Q&A2003-01-09 : Introductory statement with Q&A
2002-02-07 : Introductory statement with Q&A
2001-12-17 : The ECB's monetary policy strategy and the quantitative definition of price stability