Degenerative Diseases of the Nervous System, Parkinson DiseaseAdams & Victors Principles of Neurology, Chp 39, pg 1082, Ropper, A.H.,et al, 2014
Subcotical Arteriosclerotic Encephalopathy (Binswangers Disease), Ghika,J. &Bogousslavsky, J., 1998