The webapp provides for each item the link on ECB's website.
Speeches for : Willem F. Duisenberg where "tensions" appeared
2003-06-03 : Monetary and fiscal policy in the euro area2003-04-03 : Introductory statement with Q&A
2003-03-06 : Introductory statement with Q&A
1997-10-17 : 1999 - A new European monetary system