Infections of the Nervous System, (Bacterial, Fungal, Spirochetal, Parasitic) and Sarcoidosis, Whipple Disease
Adams & Victors Principles of Neurology, Chp 32, pg 710, Ropper, A.H.,et al, 2014
Ocular Motor Manifestations of Brainstem & Cerebellar Dysfunction
Chap 9, p 104 Neuro-Ophthalmol ed J. L. Smith., Daroff,R.B., 1850