http://trade.ec.europa.eu/doclib/docs/2019/june/tradoc_157964.pdf
https://www.wto.org/english/res_e/booksp_e/anrep_e/ar23_e.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/878352/Freeports_Consultation_Extension.pdf