1. Brain, W. R. (1928). Lancet, 1, 1295.
2. Creak, M. and Guttmann, E. (1935). J. ment. Sci.. 81.
3. Deutsch, H. (1925). Int. Z. Psvchoanal., 11, 325.
4. Further Contributions to the Theory and Technique of Psychoanalvsis;Ferenczi, S.,1926
5. A Short Practice of Mfedicine;Fleming, R.A.,1912