The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "monitoring" appeared
2003-02-04 : Speech on the occasion of the 175 anniversary of theBank van de Nederlandse Antillen2000-11-02 : First ECB Central Banking Conference, 2-3 November 2000, Frankfurt am Main
1999-12-03 : Monetary policy-making under uncertainty
1997-11-15 : Monetary policy in EMU