https://www.transparency.org/news/feature/stopping_dirty_money_the_global_effective_o_meter
https://strengtheningeurope.eu/fileadmin/files/BSt/Publikationen/GrauePublikationen/EZ_JDI_BST_Mapping_Paper_How_are_you_doing_Europe_2019_ENG.pdf
https://www.oecd-ilibrary.org/docserver/7e1bf673-en.pdf?expires=1537041018&id=id&accname=guest&checksum=E2E4B144ED9C13DF58246370C7677883