1. 1) Crickmay, M. C.: Speech Therapy and Bobath Approach to Cerebral Palsy. Charls C Tomas, Springfield, 1966, pp. 91-161.
2. 2) Darley, F. L., Aronson, A. E. & Brown, J. R.: Moter Speech Disorers. W. B. Saunders Company. Philadelphia, 1975, pp. 250-287.