https://emmaclancy.files.wordpress.com/2018/07/apple-tax-structure-and-rate-post-2014.pdf
https://www.occrp.org/en/investigations/the-quiet-man-in-stockholm-who-laundered-chinas-oil-money-for-iran
https://publications.parliament.uk/pa/cm201719/cmselect/cmfaff/932/932.pdf
https://www.bertelsmann-stiftung.de/fileadmin/files/BSt/Publikationen/GrauePublikationen/WKIO_2020_final.pdf?utm_source=POLITICO.EU&utm_campaign=15a7cc1e87-EMAIL_CAMPAIGN_2020_04_08_08_59&utm_medium=email&utm_term=0_10959edeb5-15a7cc1e87-190380769