Degenerative Diseases of the Nervous System, Amyotrophic Lateral Sclerosis
Adams & Victors Principles of Neurology, Chp 39, pg 1109, Ropper, A.H.,et al, 2014
Charcot-Marie-Tooth Disease Associated With"Essential Tremor"
Neurol Sciences 28:17-40, Salisachs,P.J., 1976