Huntington's Chorea-Deficiency of Y-Aminobutynic Acid in BrainNEJM 288:337, 1973, 289:104, 1973, 292:10295., Perry,T.,et al, 1975
Catecholamines & Neurologic DiseasesNEJM 293:274, Moskowitz,M.A.,et al, 1975