1. S. N. Golikov, G. A. Gur'yanov, and Yu. A. Lyubimov, Farmakol. Toksikol.,50, No. 4, 72–78 (1987).
2. I. E. Kovalev, ibid.,51, No. 5, 5–11 (1988).
3. I. E. Kovalev, Khim.-farm. Zh.,23, No. 12, 1413–1425 (1989).
4. A. Ya. Kul'berg, Regulation of the Immune Response [in Russian], Moscow (1986).
5. P. V. Sergeev and N. L. Shimanovskii, Receptors of Physiologically Active Substances [in Russian], Moscow (1987).