The webapp provides for each item the link on ECB's website.
Speeches for : Peter Praet where "riskfree" appeared
2016-04-07 : The ECB's monetary policy response to disinflationary pressures2015-03-11 : Public sector security purchases and monetary dominance in a monetary union without a fiscal union
2011-11-15 : Fixed income investment of insurance companies and pension funds in a low yield - but volatile - environment