1. M. D. Mashkovsky and L. N. Yachontov,Prog. Drug Res.,13, 293–339 (1969).
2. L. N. Yakhontov, M. D. Mashkovskii, and E. E. Mikhlina,Khim.-Farm. Zh.,14(12), 23–32 (1980).
3. M. D. Mashkovsky and L. N. Yachontov,Prog. Drug Res.,27, 9–61 (1983).
4. M. D. Mashkovskii,Drugs [in Russian], Vol. 1, Torsing, Kharkov (1997), p. 278.
5. L. N. Yakhontov and R. G. Glushkov,Synthetic Drugs [in Russian], Meditsina, Moscow (1983), pp. 192–195.