The webapp provides for each item the link on ECB's website.
Speeches for : Jurgen Stark where "portfolio" appeared
2010-07-09 : Enhancing the ECB's monetary analysis: what have we learnt?2007-12-12 : The external dimension of monetary analysis
2007-09-07 : Enhancing the monetary analysis
2006-11-09 : The role of money: Money and monetary policy in the twenty-first century