1. Association of Chief Police Officers (ACPO)/National Police Improvement Agency (NPIA) 2003 Facial identification guidance http://www.acpo.police.uk/documents/crime/2009/200911CRIFIG01.pdf
2. Attorney General's Reference 2003 1 CR. App. R. 321, England
3. The effect of image pixelation on unfamiliar face matching;Bindemann;Applied Cognitive Psychology,2013
4. Verification of face identities from images captured on video;Bruce;Journal of Experimental Psychology: Applied,1999
5. The Glasgow face matching test;Burton;Behavior Research Methods,2010