1. P. K. Anokhin, Electroencephalographic Analysis of the Conditioned Reflex [in Russian] (Moscow, 1958).
2. A. G. Ivanov-Smolenskii, Methods for Studying Conditioned Reflexes in Man (Juvenile and Adult Patients and Normals) [in Russian] (Moscow, 1933).
3. Kali Kats, Zhurn. Vyssh. Nervn. Deyat.8, 4, 499 (1958).
4. A. B. Kogan, Thesis Report, 14th Annual Conferences on Problems of Higher Nervous Activity [in Russian] (Moscow, Leningrad, 1951) p. 20.
5. A. B. Kogan, Thesis and Abstract Report. 16th Annual Conference on Problems of Higher Nervous Activity [in Russian] (Moscow-Leningrad, 1953) p. 108.