1) Cushing H, Bailey P: Tumors arising from the blood vessels of the brain, in: Angiomatous Malformations and Hemangioblastomas. Springfield, Illinois, CC Thomas, 1928, 219 pp
2) Daniels DL, Williams AL, Syvertsen A, Gager W, Harris GT: CT recognition of optic nerve sheath meningioma: Abnormal sheath visualization. AJNR 3: 181-183, 1982