1. E. B. Berkhin and B. Ya. Varshavskii, Dokl. Akad. Nauk SSSR,220, 1463 (1975).
2. B. Ya. Varshavskii, V. F. Sazonov, and V. N. Biryulya, Antibiotiki, No. 11, 981 (1974).
3. C. Dietze and H. Braünlich, Farmakol. Toksikol., No. 1, 48 (1974).
4. G. Bernhardt, H. Braünlich, C. Dietze, et al., Acta Biol. Med. Germ.,31, 423 (1973).
5. H. Eagle and E. Newman, J. Clin. Invest.,26, 903 (1947).