http://www.guengl.eu/uploads/publications-documents/NSkoutarisGUENGLReportC_%28002%29.pdf
https://www.cbi.org.uk/media/4112/the-red-tape-challenge-final.pdf
https://ec.europa.eu/commission/publications/position-paper-transmitted-eu27-ongoing-police-and-judicial-cooperation-criminal-matters_en
https://www.esri.ie/system/files/publications/WP677_0.pdf