1. Moore DW (2005) Three in four Americans believe in paranormal. Princeton: Gallup News Service. Available: http://www.gallup.com/poll/16915/three-four-americans-believe-paranormal.aspx. Accessed 2013 Jul 8.
2. Newport F, Strausberg M (2001) Americans’ belief in psychic and paranormal phenomena is up over last decade. Princeton: Gallup News Service. Available: http://www.gallup.com/poll/4483/americans-belief-psychic-paranormal-phenomena-over-last-decade.aspx. Accessed 2013 Jul 8.
3. Science and Pseudoscience in law Enforcement: A User-Friendly Primer;SO Lilienfeld;Crim Justice Behav,2008
4. European Commission (2005) Special Eurobarometer 224: Europeans, science and technology. Brussels: Author.
5. Are the clinical effects of homeopathy placebo effects? Comparative study of placebo-controlled trials of homeopathy and allopathy;A Shang;The Lancet,2005