1. R. Granit, The Basis of Motor Control, Academic Press (1976).
2. L. R. Zenkov, in: Parkinsonism [in Russian], Moscow (1974), pp. 66?88.
3. O. Hornykiewicz, Pharmacol. Rev.,18, 295?964 (1966).
4. K. Herishanu, Eur. Neurol.,8, 251?256 (1972).
5. O. Rosental, Neurology (Minneapolis),22, 1?11 (1972).