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2. O. V. Berkos, S. A. Zueva, E. M. Matrosova, et al., in: The Physiology and Pathology of Digestion and Problems in Balneology and Physiotherapy [in Russian], Tbilisi (1963), p. 23.
3. B. P. Babkin, The Secretory Mechanism of the Digestive Glands [in Russian], Leningrad (1960).
4. N. F. Baranova and E. N. Speranskaya, Proceedings of a Scientific Conference on the Physiology and Pathology of Digestion in Memory of K. M. Bykov [in Russian], Ivanova (1960), p. 64.
5. V. M. Koporov, Data on the Pathological Physiology of the Salivary Glands [in Russian], Moscow (1949).