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2. T. I. Lanskaya and B. A. Erman, in: Enterovirus Infections [in Russian], Sverdlovsk (1967), p. 53.
3. D. S. Sarkisov and B. V. Vtyurin, Electron Microscopy of Destructive and Regenerative Intracellular Processes [in Russian], Moscow (1967).
4. A. M. Strukov and K. S. Mitin, in: Mitochondria. Structure and Functions under Normal and Pathological Conditions [in Russian], Moscow (1971), p. 18.
5. Yu. G. Tsellarius, in: Mechanisms of Sclerotic Processes and Scar Formation [in Russian], Novosibirsk (1964), p. 35.