1. Mashkovskii, M.D., Lekarstvennye sredstva (Drugs), Moscow: Novaya Volna, 2002, vol. 1, p. 159.
2. Pashkevich, V.M. and Saloutin, V.I., Usp. Khim., 1985, vol. 54, p. 1997.
3. Nasonov, E.L. Terapevt. Arkhiv., 2001, no. 5; Yakovleva, L.V., Shapoval, O.N., and Zupanets, I.A., Sovremennye aspekty ratsional’nogo obezbolivaniya v meditsinskoi praktike: Prakticheskoe rukovodstvo (Modern Aspects of Rational Anesthesia in Medical Practice. A Practical Guide), Treshchinskii, A.I., Usenko, L.V., and Zupanets, I.A., Eds., Kiev: MORION, 2000, p. 6.
4. Harode, R. and Jain, V., Indian Drugs, 1984, vol. 21, p. 442; Balakrishna, K. and Prashantha, G., Indian J. Heterocycl. Chem., 1999, vol. 8, p. 241.
5. Gulhan, T.Z. and Pierre, C., Eur. J. Med. Chem., 2000, vol. 35, p. 635.