Huntington Disease: Clinical Features and Diagnosis
UptoDate Dec 2017, Oksana Suchowersky, 2017
Inherited Metabolic Diseases of the Nervous System, Globoid Cell Leukodystrophy (Krabbe Disease, Galactocerebrosidase)
Adams & Victors Principles of Neurology, Chp 37, pg 959, Ropper, A.H.,et al, 2014