The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "credible" appeared
2014-04-07 : Presentation of the ECB Annual Report 2013 to the Committee on Economic and Monetary Affairs of the European Parliament2011-10-06 : Introductory statement to the press conference (with Q&A)
2010-12-02 : Introductory statement with Q&A