https://www.economiesuisse.ch/de/artikel/schuldentricks-und-standortsorgen-deutschland-im-kreuzfeuer
http://ecipe.org//app/uploads/2018/02/ECIPE_Occasional0218_HLM_V7.pdf
https://www.occrp.org/es/investigations/the-luxury-french-real-estate-of-alleged-latin-american-money-launderers-and-officials-accused-of-corruption
https://www.iwh-halle.de/fileadmin/user_upload/publications/gd/2022f/GD_F22_Langfassung_online.pdf