1. Bailey P:Intracranial Tumors.Springfield, Ill, Charles C Thomas, 1948, ed 2, pp 156–184
2. Courville CB:Essentials of Neuropathology.Los Angeles, San Lucas Press, 1953, pp 203–217
3. Cushing HC, Eisenhardt L:Meningiomas, Part 2.New York, Hafner, 1969, pp 26–27