
https://www.diepresse.com/5837400/fluchtiger-wirecard-manager-war-geheimer-fpo-informant

https://i2.res.24o.it/pdf2010/Editrice/ILSOLE24ORE/QUOTIDIANI_VERTICALI/Online/_Oggetti_Embedded/Documenti/2020/10/13/Sentenza_Mangani.pdf

https://www.esri.ie/system/files/publications/SUSTAT128_2.pdf