The webapp provides for each item the link on ECB's website.
Speeches for : Lucas Papademos, Jean-Claude Trichet where "pillar" appeared
2007-06-06 : Introductory statement with Q&A2007-04-12 : Introductory statement with Q&A
2007-01-11 : Introductory statement with Q&A
2006-11-02 : Introductory statement with Q&A