1. Magnetic Resonance Imaging and Computed Tomography of the Head and Spine;Grossman,1991
2. Primitive neuroectodermal tumors of the brain in children;Hart;Cancer,1973
3. Pediatric supratentorial tumors;Zimmerman;Semin Roentgenol,1990
4. Pathology of Tumors of the Nervous System;Russell,1989
5. Roentgen sarcoma; pathogenesis of sarcoma;Beck;Munchen Med Wchnschr,1922