REFERENCES
- Geschickter, E. F. and Copeland, M. M.: Tumors of Bone. Ed. 3. Philadelphia, J. B. Lippincott Company, 1949.
- Ariel, I. M. and Jacobs, P. A.: Extraosseous chondrosarcoma arising from the tendon Achilles. Bull. Hosp. Joint Dis. 22: 129–136 (October) 1961.