1. Extraosseous osteogenic sarcoma. A review of 48 patients;Sordillo;Cancer,1983
2. Extraskeletal ossifying tumors;Wilson;Ann Surg,1941
3. Ossifying sarcoma of vastus externus;Jaidka;Br Med J,1919
4. Atypical forms of bone sarcoma;Coley;Bull Hosp Joint Dis,1951
5. Osteogenic sarcoma arising in traumatic hemothorax and hematoma of the thoracic wall;Stauss;Surgery,1951