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2. L. L. Vasil'ev, in: Advances in Reflexology and the Physiology of the Nervous System [in Russian] (1925) pp. 1–14.
3. B. F. Werigo, Pflüg. Arch.31, 417 (1883).
4. B. F. Werigo, Dissertation for doctorate: The Problem, of the Action of Galvanic, Intermittent and Continuous Current on the Nerve (an attempt to explain the physiological phenomena of electrotonus) [in Russian] (St. Petersburg, 1888) pp. 1–338.
5. N. V. Golikov and V. L. Merkulov, Transactions of the Society of Naturalists, Physiology Section [in Russian] (Leningrad-Moscow, 1935) p. 304.