1. I. N. Filimonov, Cytoarchitectonics of the Human Cerebral Cortex [in Russian], Medgiz, Moscow (1949), p. 32.
2. V. M. Bekhterev, Fundamentals of the Study of Brain Functions [in Russian], No. 6, St. Petersburg (1907), p. 7.
3. P. K. Anokhin, The Biology and Neurophysiology of Conditioned Reflexes [in Russian], Meditsina, Moscow (1968).
4. A. S. Batuev, Evolution of the Frontal Lobes and Integrative Activity of the Brain [in Russian], Meditsina, Leningrad (1973).
5. J. E. Fulton, Frontal Lobotomy and Affective Behaviour, London (1951).