1. N. M. Verzilov, The Problem of Vasomotor Regulation by the Dorsal Roots [in Russian] (St. Peterburg, 1896).
2. M. M. Denisnko, Problems of Soviet Physiology, Biochemistry, and Pharmacology [in Russian] (Moscow, 1949) p. 291.
3. M. A. Karlin, Transactions of the All-Union Society of Physiologists, Biochemists, and Pharmacologists 1, 82 (Moscow, 1952).
4. A. W. Kibjakow, Arch. ges. Physiol.,228, 30 (1931).
5. A. W. Kibjakow, and A. A. Uzbekov, Byull. Eksptl. Biol. i Med.29, 3, 202 (1950).