The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "counterparty" appeared
2008-12-08 : Remarks on the financial turmoil2007-06-05 : International Monetary Conference Central Bankers panel
2007-04-18 : Some reflections on the development of credit derivatives
2006-04-04 : Issues related to central counterparty clearing