Inherited Metabolic Diseases of the Nervous System, Tay Sachs DiseaseAdams & Victors Principles of Neurology, Chp 37, pg 957, Ropper, A.H.,et al, 2014
Chronic Hexosaminidase A & B Deficiencyet al. , Ann Neurol 2:156977., Goldie,W.D., 1977