Degenerative Diseases of the Nervous System, Amyotrophic Lateral Sclerosis
Adams & Victors Principles of Neurology, Chp 39, pg 1109, Ropper, A.H.,et al, 2014
Amyotrophic Lateral Sclerosis:Correlation of Clinical & MR Imaging Findings
Radiology 194:263-270, Cheung,G.,et al, 1995
Motor Neuron Disease
JNNP 57:886-896, Leigh,P.N.&Ray-Chaudhuri,K., 1994