1. Delay, J., Deniker, P., Green, A., and Mordret, M. (1957). Presse med. 65, 1771.
2. The Basal Ganglia and their Relation to the Disorders of Movement;Denny-Brown, D.,1962
3. Psychosurgery;Freeman, W.; Watts, J.W.,1950
4. Freyhan, F. A. (1957). Nervenarzt, 28, 504.
5. Grunthal, E., and Walther-Buel, H. (1960). Psychiat. et Neurol.