The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg, Christian Noyer where "zone" appeared
2002-04-04 : Introductory statement with Q&A2001-06-21 : Introductory statement with Q&A
2001-03-01 : Introductory statement with Q&A
2001-02-01 : Introductory statement with Q&A