http://www.ibec.ie/Ibec/Brexit.nsf/vPages/Home~Brexit?OpenDocument
https://publications.parliament.uk/pa/cm201719/cmselect/cmsctech/705/70503.htm#_idTextAnchor001
https://www.mckinsey.com/industries/technology-media-and-telecommunications/our-insights/the-telecom-sector-in-2020-and-beyond?cid=other-eml-alt-mip-mck&hdpid=2a59335f-eea4-491d-bc81-9a8a4d69d739&hctky=2073353&hlkid=700e64d6b4b64a719cb2f314d4ed4afb#
https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2021-na-99-approvisionnement-electricite-janvier.pdf