The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "underlying" appeared
2002-05-08 : What are the political consequences of the euro?2000-11-23 : Hearing before the Committee on Economic and Monetary Affairs of the European Parliament with the President of the European Central Bank, in accordance with Article 113(3) of the Treaty on European Union, Brussels, 23 November 2000
1999-12-02 : Introductory statement with Q&A