Retinitis Pigmentosa
Surv Ophthalmol 33:137-177, Pagon,R.A., 1988
Vertigo of Vascular Origin, Clinical and Electronystagmographic Features in 84 Cases
Arch Neurol 46:281-284, Grad,A.&Balch,R.W., 1989
Nystagmus of Pelizaeus-Merzbacher Disease
Arch Neurol 48:87-91, Trobe,J.D.,et al, 1991