1. Gerstmann, J. (1924). Wien. klin. Wschr., 37, 1010.
2. Head, H. (1920). Studies in Neurology, vol. 2. London.
3. Hulin, W. S. (1935). J. exp. Psychol., 18, 97.
4. McFie, J., and Piercy, M. (1951). J. ment. Sci., 98, 299.
5. The Integrative Action of the Nervous System;Sherrington, C.S.,1947