1. V. I. Badikov, in: Vasoactive Peptides [in Russian], Sofia (1980), pp. 12?13.
2. L. F. Roshchina, Farmakol. Toksikol., No. 3, 306 (1980).
3. K. V. Sudakov, in: Vasoactive Peptides [in Russian], Sofia (1980), pp. 31?33.
4. K. V. Sudakov, V. V. Sherstnev, and S. A. Osipovskii, Byull. Eksp. Biol. Med., No. 8, 899 (1977).
5. K. V. Sudakov, Biological Motivations [in Russian], Moscow (1971).