1. P. G. Gaft, in: Prevention and Treatment of Cardiovascular Failure [in Russian], No. 1, Kiev (1957), p. 12.
2. T. A. Grigor'eva, Innervation of the Blood Vessels [in Russian], Moscow (1954).
3. I. D. Gedevanishvili, The Peripheral Circulation and Special Features of its Regulation [in Russian], Moscow (1967).
4. A. A. Kedrov and A. I. Naumenko, Problems in the Physiology of the Intracranial Circulation and Their Clinical Interpretation [in Russian], Leningrad (1954).
5. B. N. Klosovskii, The Circulation of Blood in the Brain [in Russian], Moscow (1951).