The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "principles" appeared
2002-10-08 : Testimony before the Committee on Economic and Monetary Affairs of the European Parliamentwith the President of the European Central Bank, in accordance with Article 113(3) of the Treaty on European Union2002-05-16 : Challenges to the ECB's monetary policy
2002-05-09 : International Charlemagne Prize of Aachen for 2002
2001-06-20 : Euro 2002 Information Campaign
2001-03-06 : the EURO. OUR money
1997-10-17 : 1999 - A new European monetary system
1997-09-22 : The European Monetary Institute and progress towards monetary union