The webapp provides for each item the link on ECB's website.
Speeches for : Vitor Constancio where "panel" appeared
2017-10-15 : Growth in a more resilient Euro area2017-08-23 : Investment and growth in advanced economies: selected takeaways from the ECB’s Sintra Forum
2015-02-27 : Central banks with large balance sheets (slides from the presentation)
2012-06-14 : Financial Stability: Methodological advances and policy issues