1. Bailey P, Buchanan DN, Bucy PC:Intracranial Tumors of Infancy and Childhood.Chicago: University of Chicago Press, 1939, pp 309–321
2. Neurilemmoma of the fourth cranial nerve
3. Ford FR:Disease of Nervous System in Infancy, Childhood and Adolescence, ed 5.Springfield, Ill: Charles C Thomas, 1966, pp 320, 1005, 1008
4. Huber A:Eye Signs and Symptoms in Brain Tumors, ed 3.St Louis: CV Mosby, 1976, p 249