1. Bundey, S., Harrison, M. J. G. and Marsden, C. D. (1975). A genetic study of torsion dystonia. J. Med. Genet., 12, 12–19.
2. Campbell, J. (1979). The shortest paper. Neurology, 29, 1633.
3. Couch, J. R. (1976). Dystonia and tremor in spasmodic torticollis, Adv. Neurol., 14, 245–58.
4. Fahn, S. and Singh, N. (1980). Segmental tremor vs rhythmic myoclonus: succesful treatment with serotonin precursors. Neurology, 30, 383–4.
5. Fahn, S. and Singh, N. (1981). An oscillating form of essential myoclonus. Neurology, 31 (no. 4, part 2), 80.