Walkowski, M. 2016. The problem of mounting income inequalities in the world vis-a-vis the phenomenon of harmful tax competition. The ICIJ tracking down the greatest financial scandals of the 21st century. Przegląd Politologiczny. 2 (cze. 2016), 137–154. DOI:https://doi.org/10.14746/pp.2016.21.2.11.