1. N. K. Belaya, Pediatriya, No. 1, p. 41 (1957).
2. O. P. Vishnevskaya, Problems of the Pathology of the Nervous System [in Russian], Moscow-Leningrad, p. 185 1940.
3. A. G. Ginetsinskii, Fiziol. zhurn. SSSR, Vol. 33, No. 4, p. 413 (1947).
4. A. G. Ginetsinskii and N. M. Shamarina, Trudy Fiziologicheskogo in-ta im Pavlova., Moscow-Leningrad, Vol. 4, p. 139 (1949).
5. V. V. Portugalov, (Dissertation)., The Histophysiology of Nerve Endings [in Russian], Moscow, 1953.