1. A. K. Antonov, N. N. Vasilevskii, A. I. Naumenko et al., Fiziol. zh., SSSR, No. 2 275 (1961).
2. A. A. Kedrov and A. I. Naumenko, Problems in the Physiology of the Intracranial Circulation and Their Clinical Interpretation [in Russian] (Leningrad, 1954).
3. T. Yu. Liberman, Byull. éksper. biol., No. 1, 111 (1958).
4. N. N. Savitskii, Some Methods of Investigation and Functional Evaluation of the Circulatory System [in Russian] (Leningrad, 1956).
5. E. Becher, Mitt. Grenzgeb. Med. Chir.,35, 356 (1922).