1. A. I. Grinevich, N. A. Gorchakova, R. D. Samilova, et al., Scientific and Technical Advances in Pharmacology [in Russian], Tashkent (1988), pp. 96–97.
2. S. S. Liberman and Ya. N. Yakhontov, Khim.-farm. Zh., No. 9, 1046–1060 (1988).
3. I. S. Chekman, Pharmacology of Cardiotonic Drugs [in Russian], Moscow (1988).
4. I. S. Chekman and V. V. Tkachuk, Farmakol. Toksikol., No. 6, 5–15 (1984).
5. H. R. Adams, J. Thody, and J. L. Satko, Circ. Res.,51, 662–665 (1982).