The webapp provides for each item the link on ECB's website.
Speeches for : Jose Manuel Gonzalez-Paramo where "purchase" appeared
2011-10-21 : The ECB's monetary policy during the crisis2011-03-24 : The ECB's Non-standard Measures during the Current Financial Crisis The ECB's Non-standard Measures during the Current Financial Crisis
2010-02-26 : Monetary and fiscal policy interactions during the financial crisis
2009-09-04 : Fiscal policy and the financial crisis: the need for an effective exit strategy