https://www.ifs.org.uk/uploads/publications/bns/BN243.pdf
https://www.courthousenews.com/eu-must-act-quickly-to-catch-up-to-us-warns-report-author/
http://eurodad.org/files/pdf/58d39b90e6546.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/680142/Chancellor_to_Governor_February_2018.pdf