Classification and Treatment of Tremor
JAMA 266:1115-1117, Hallett,M., 1991
Reduction in Voice Tremor Under Thalamic Stimulation
Neurol 50:796-798, Carpenter,M.A.,et al, 1998
Essential Tremor:Clinical Correlates in 350 Patients
Neurol 41:234-238, Lou,J.&Jankovic,J., 1991