The webapp provides for each item the link on ECB's website.
Speeches for : Tommaso Padoa-Schioppa where "oversight" appeared
2004-05-13 : Shaping the payment system: a central bank's role2003-06-12 : Opening speech
2001-09-05 : Clearing and settlement of securities: a European perspective
2001-04-02 : Consolidation of the payment systems industry: the Eurosystem's perspective
2000-11-09 : Domestic payments in Euroland: commercial and central bank money
1999-09-13 : Payments and the Eurosystem