1. R. J. Cramer, Anabolic steroids are easily purchased without a prescription and present significant challenges to law enforcement officials, http://www.gao.gov/new.items/d06243r.pdf, 3 November 2005.
2. G. Hermansson, Doping trade: business for the big ones. Search for author under http://www.playthegame.org, January 2008
3. Anabolic Steroid Use
4. http://www.timesonline.co.uk/tol/sport/more_sport/athletics/artic le3942201.ece, accessed 16 May 2008.
5. http://news.bbc.co.uk/sport1/hi/olympics/athletics/7403158.stm, 16 May 2008.