1. Bradley, C. (1951). J. Amer. med. Ass., 146, 436.
2. Epilepsy and Convulsive Disorders in Children;Bridge, E.M.,1949
3. McGraw-Hill, New York. Henderson, P. (1953). Brit. J. prev. soc. Med., 7, 9.
4. Navratil, L., and Strotzka, H. (1954). Wien. Arch. Psychol., 4, 36.
5. Pond, D. A. (1952). J. ment. Sci., 98, 404.