1. A Classification of Tumors of the Glioma Group;Bailey, P.; Cushing, H.,1926
2. Extracranial metastasis in a case of intracranial ependymoma;Perry, R.E.;Archives of Pathology,1957
3. Extracranial metastases in cerebellar medulloblastoma;Rubinstein, L.J.;Journal ofPathology,1959
4. Pathology of Tumours of the Nervous System;Russell, D.S.; Rubinstein, L.J.,1963
5. A metastasising ependymoma of the cauda equina;Weiss, L.;Cancer,1955