References
- Catranis Incorporated. Improved artificial limbs for lower extremity amputations; subcontractors final report to the Advisory Committee on Artificial Limbs. National Research Council-Syracuse. Catranis, NY 1954
- Murphy E. F. Lower extremity components. American Academy of Orthopedic Surgeons. Orthopedic appliances atlas—Ann Arbor. J. W. Edwards, MI 1952; 228–230
- United States Army. Office of the Surgeon General, Commission on Amputations and Prostheses. Report of European observations—. Office of the Surgeon General, Washington 1946; 66–77