1. Spinal extradural neoplasms and intradural extramedullary neoplasms;Yamamoto,1999
2. Tumors of neuroglial cells;Rubinstein,1972
3. Primary spinal neoplasms in childhood: Analysis of 1234 published cases (including 56 personal cases) by pathology, sex, age and site;Di Lorenzo;Neurochirurgia,1982
4. Spinal cord tumors;Raffel,1994
5. A case of tumour of the spinal cord;Gowers;Med-Chir Trans,1888