The webapp provides for each item the link on ECB's website.
Speeches for : Otmar Issing where "payment" appeared
2005-05-31 : The euro and European financial market integration2000-09-12 : The globalisation of financial markets
2000-06-28 : New Technologies in Payments: A Challenge to Monetary Policy
1999-05-27 : Hayek - currency competition and European Monetary Union