1. AFP 2005 Slovak Opposition Accuses World Bank of Interfering in Internal Affairs
2. Patterns of Stability: Party Competition and Strategy in Central Europe since 1989;Bakke;Party Politics,2005
3. Bielecki , Jan Kryzysztof 2013 Guest Post: The Real Meaning of Poland's Pension Reform http://blogs.ft.com/beyond-brics/2013/11/07/guest-post-the-real-meaning-of-polands-pension-reform/
4. Bielecki , Jan Krzysztof Mark Allen 2014 Making Sense of Pension Reform http://www.project-syndicate.org/commentary/jan-k-bielecki-and-mark-allen-show-why-changes-to-pension-systems-should-be-undertaken-when-economic-growth-isrobust