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2. A. I. Kononskii, Histochemistry [in Russian], Kiev (1976).
3. E. F. Kotovskii and M. Rys-Uly, in: Repair Processes in Cells, Tissues, and Organs [in Russian], Alma-Ata (1979), pp. 81?82.
4. K. M. Leutskii, Ukr. Biokhim. Zh., No. 6, 771 (1972).
5. A. O. Natanson, in: Vitamins [in Russian], Moscow (1974), pp. 46?88.