The webapp provides for each item the link on ECB's website.
Speeches for : Jose Manuel Gonzalez-Paramo where "burden" appeared
2012-04-18 : Future challenges for central bank statistics2008-04-25 : Concluding Remarks at the Fourth ECB conference on statistics “A strategic vision for statistics: challenges for the next ten years”
2006-05-04 : Financial Statistics for a Global Economy
2005-05-13 : Taxation, tax reform and monetary policy