
http://www2.warwick.ac.uk/fac/soc/pais/research/researchcentres/irs/crossingthemed/ctm_final_report_4may2017.pdf

https://www.etui.org/sites/default/files/2023-12/Relocation-an%20old%20problem%20in%20search%20of%20new%20answers_2023%20%281%29.pdf

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/695321/An_inspection_of_exit_checks.pdf