1. Brovtsyna, N.V., Bogoslovskaya, S.I., Borodkin, Yu.S., and Khromov-Borisov, N.V., Farmakol. Toksikol., 1983, vol. 46, no. 1, p. 70.
2. Efremov, O.M., Aleksandrova, I.Ya., Kulikov, S.V., Losev, N.A., and Piotrovskii, L.B., Eksp. Klin. Farmakol., 2005, vol. 68, no. 1, p. 7.
3. Todd, S.C. and Baures, P.W., US Patent Appl. Publ. no. 2003/0 219 893, 2003; Chem. Abstr., 2005, vol. 140, no. 5300.
4. Baures, P.W., US Patent no. 6 184 241, 2001; Chem. Abstr., 2001, vol. 134, no. 131 820.
5. Nematollahi, J., Guess, W., and Autian, J., J. Med. Chem., 1966, vol. 9, p. 660.