1. Bishop, G. H. (1944a). J. Neurophysiol., 7, 71.
2. Bishop, G. H. (1944b). Ibid, 7, 185.
3. "The;Bradford, F.K.; Spurling, R.G.,1941
4. Semiologie des Affections du SystDmeNerveux.;Neurol, Arch;Psychiat. Chicago'; Paris.,1914
5. Falconer, M. A. (1944). N. Zealand med. J., 43, 58.