1. P. N. Aleksandrov and V. K. Khugaeva,Pat. Fiziol., N o 4, 65–67 (1989).
2. Z. A. Dobrovol'skaya and A. F. Kosenko,Fiziol. Zh. SSSR,75, N o 5, 734–736 (1989).
3. E. M. Kobakova,Genesis and Development of Motor Activity in the Small Intestine during Ontogeny (Dissertation) [in Russian], Leningrad (1952).
4. K. I. Nesen,Fiziol. Zh. SSSR,65, N o 4, 486–490 (1969).
5. A. D. Nozdrachev,Physiology of the Autonomic Nervous System [in Russian], Moscow (1983).