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3. Running-specific prostheses permit energy cost similar to nonamputees;MB Brown;Med Sci Sports Exerc,2009
4. Linendoll K. Össur’s Cheetah Goes for Paralympic Gold ESPN.com 2012 [Available from: http://espn.go.com/blog/playbook/tech/post/_/id/2047/ossurs-flex-foot-cheetah-goes-for-gold-in-paralympics.
5. Shaw A. Pistorius, 25, Is First Double-Amputee Sprinter to Compete in Olympic Games: ABC News; 2012 [Available from: http://abcnews.go.com/Sports/oscar-pistorius-makes-history-double-amputee-sprinter-compete/story?id=16929845.