1. Myoclonus
2. Bradley W, Daroff R, Fenichel A, Marsden C D, eds. Neurology in Clinical Practice. Boston, Mass: Butterworth-Heinemann; 1991
3. The Varied Clinical Expressions of Dystonia
4. Kurlan R, ed. Treatment of Movement Disorders. Philadelphia, Pa: JB Lippincott; 1995
5. Weiner W J, Lang A E. Movement Disorders: A Comprehensive Survey. Mount Kisco, NY: Futura; 1989