https://europa.eu/eurobarometer/api/deliverable/download/file?deliverableId=85321
http://www.europeaninstitute.org/index.php/311-european-affairs/ea-october-2017/2242-as-chinese-investment-rises-in-europe-brussels-proposes-greater-scrutiny-of-foreign-purchases-of-eu-based-companies
https://www.eppo.europa.eu/sites/default/files/2023-02/EPPO_2022_Annual_Report_EN_WEB.pdf