1. Simons, L. Rethinking traditional hoofcare: The Strasser lic. Theory flies in the face of mainstream farrier logic. Available at: http:www.hoofcare.com/contents74.html.
2. Saxton, Ken. Why run barefoot? Available at: http://www.runningbarefoot.org.
3. Warburton, M. Barefoot Running. Sportscience; Available at: http.www.sportsci.org/index.html/jour/03/03.html1.