1. 1 . Dahlin DC: Bone Tumors. General Aspects and Data on 6.221 Cases ed 3. Springfield IL Charles C. Thomas Co 1978. pp 18-27.
2. 2. Harsha WN: The natural history of osteocartilaginous exostoses (osteochondroma). Am Surg 1954; 20:65.
3. 3 . Jaffe HL: Tumors and Tumorous Conditions of Bones and Joints. Philadelphia Lea& Febiger 1958 pp 143-167.
4. 4. Lichtenstein 1: Bone Tumors. St Louis CV Mosby Co 1952. ? 26.
5. 5. Callan JE Wood VE: Spontaneous resolution of an osteochondroma. Brief notes. J Bone Joint Surg 1975; 57A:723.