Degenerative Diseases of the Nervous System, Progressive Supranuclear Palsy
Adams & Victors Principles of Neurology, Chp 39, pg 1096, Ropper, A.H.,et al, 2014
Locked-In Syndrome:A Review of 139 Cases
Stroke 17:758-764, Patterson,J.R.&Grabois,M., 1986