1. Alaoui, A., Smadja, A.: Les tumeurs cartilagineuses du squelette. Etude anatomique. Maroc. Med. 49, 594?597 (1969)
2. Ackermann, L. V., Spjut, H. J.: Tumors of bone and cartilage, pp. 20?22. Washington: Armed Forces Institute of Pathology 1962
3. Aegerter, E., Kirkpatrick, J. A.: Orthopaedic diseases, pp. 435?438. Philadelphia-London: W. B. Saunders 1958
4. Clara, M.: Die arterio-venösen Anastomosen, S. 13, 19, 36, 213?264. Wien: Springer 1956
5. Copeland, M. M., Geschickter, C. F.: Chondroblastic tumors of bone: benign and malignant. Ann. Surg. 129, 724?735 (1949)