1. V. A. Zagorevskii and D. A. Zykov, Zh. obshchei khimii, No. 3, 793 (1963).
2. B. Levitan, In book: Bioflavonoids and Capillary Permeability [in Russian], Moscow (1957), p. 163.
3. D. Reinhart, In book: Bioflavonoids and Capillary Permeability [in Russian], Moscow (1957), p. 85.
4. I. S. Rudakova, In book: Current Problems in Pharmacology [in Russian],3, Moscow (1963), p. 316.
5. I. S. Rudakova, The Effect of Esculetin and Its Derivatives on the Permeability and Stability of the Vessels during X-ray Irradiation of Animals. Candidate dissertation. Moscow (1963).