References
- Gillis L. Amputations. –-William Heinemann Medical Books Ltd., London 1954
- Jansen K. Amputation: Frequency and Cause.–-Prosthetics international. Committee on prostheses, braces and technical aids. International Society for the Welfare of Cripples, Copenhagen 1960
- Kelley, Janes. –-Georg Thieme Verlag, Stuttgart 1961, Quoted by Marquardt, W. in Handbuch der Orthopadie Band IV/Teil 2
- Klopsteg P., Wilson P. Human Limbs and their Substitutes. McGraw-Hill Book Company, Inc., New York-Toronto-London 1954
- Marquardt W. Gliedmassenamputationen und Gliedersatz. –-Wissenschaftliche Verlagsgesellschaft MBH, Stuttgart 1955