https://www.taxpolicycenter.org/sites/default/files/publication/163549/report-taxing-business-incomes-evidence-from-the-survey-of-consumer-finances.pdf
https://www.southcentre.int/wp-content/uploads/2022/09/RP143_Brazilian-Competition-Law-and-Access-to-Health-in-Brazil_EN.pdf
https://www.economiesuisse.ch/de/artikel/der-swiss-code-begruesst-ein-weiteres-mitglied