Easton, Adam (Ιουνίου 2014). On the recordings Belka was caught coordinating monetary policy with the current government, an act expressly forbidden by the Polish Constitution which mandates the NBP remain politically independent. "Poland bugging: The table talk that shook Warsaw", BBC News, 25 Ιουνίου 2014. Πρόσβαση στις 28 Ιουλίου 2014.