1. Unni KK. Dahlin’s bone tumors: general aspects and data on 11,087 cases, 5th edn. Philadelphia: Lippincott-Raven, 1996.
2. Dorfman HD, Czerniak B. Bone tumors. St Louis: CV Mosby, 1998.
3. Inward CY, Knuutila S. Low grade central osteosarcoma. In: Fletcher CDM, Unni KK, Mertens F, eds. World Health Organization classification of tumours: pathology and genetics of tumours of soft tissue and bone. Lyon: IARC Press, 2002:275–276.
4. Inward CY. Low-grade central osteosarcoma versus fibrous dysplasia. Pathol Case Rev 2001; 6:22–27.
5. Park Y-K, Choi SE, Ryu KN. Well-differentiated osteosarcoma of the rib. J Korean Med Sci 1988; 13:428–430.