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2. A. A. Zavarain, Essays on the Evolutional Histology of Blood and Connective Tissue [in Russian], M., 1957, No. 2?3.
3. A. A. Zavarzin and S. I. Shchelkunov, Handbook of Histology [in Russian]. L., 1954.
4. B. N. Klosovskii, The Development of Capillaries of the Brain [in Russian]. M., 1949.
5. B. N. Klosovskii, Blood Circulation in the Brain [in Russian]. M., 1951.