https://www.boe.es/boe/dias/2021/12/30/pdfs/BOE-A-2021-21788.pdf
https://static1.squarespace.com/static/5e449c8c3ef68d752f3e70dc/t/60eee57a56b0254d2f05a6b8/1626269051310/AmazonSurveillance_Report_2021_Final.pdf
https://www.etui.org/content/download/36217/363575/file/F-B_07_EN_WEB.pdf
https://trade.ec.europa.eu/doclib/docs/2021/july/tradoc_159709.pdf