The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg, Christian Noyer where "higher" appeared
2002-04-04 : Introductory statement with Q&A2001-04-11 : Introductory statement with Q&A
2000-07-06 : Introductory statement with Q&A
2000-06-08 : Introductory statement with Q&A
2000-03-30 : Introductory statement with Q&A