Retinitis Pigmentosa
Surv Ophthalmol 33:137-177, Pagon,R.A., 1988
Neuro-Ophthalmologic Findings in Vestibulocerebellar Ataxia
Arch Neurol 43:1050-1053, Farris,B.K.,et al, 1986
Cranial Computerized Tomography & Marie's Ataxia
Arch Neurol 35:55, Aita,J.F., 1978