https://ec.europa.eu/commission/sites/beta-political/files/governance.pdf
https://trade.ec.europa.eu/doclib/docs/2021/september/tradoc_159803.pdf
https://www.transcrime.it/wp-content/uploads/2021/09/Datacros_report.pdf
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