1. Kikilo, P.A., Khairutdinov, B.I., Shaikhutdinov, R.A., Shtyrlin, Yu.G., Klochkov, V.V., and Klimovitskii, E.N., Russ. J. Gen. Chem., 2001, vol. 71, p. 960.
2. Klimovitskii, E.N., Kikilo, P.A., Dobrynin, A.B., Kataeva, O.N., Litvinov, I.A., Fedorenko, V.Yu., and Shtyrlin, Yu.G., J. Mol. Struct., 2004, vol. 688, p. 191.
3. Klimovitskii, E.N., Sergeeva, G.N., Il’yasov, K.A., Latypov, Sh.K., Klochkov, V.V., Al’myanova, R.Kh., and Arbuzov, B.A., Zh. Obshch. Khim., 1987, vol. 57, p. 2207.
4. Kamada, T., Gama, Y., and Wasada, N., Bull. Chem. Soc. Jpn., 1989, vol. 62, p. 3024.
5. Klimovitskii, E.N., Shaikhutdinov, R.A., Kikilo, P.A., Shtyrlin, Yu.G., Klochkov, V.V., and Aminova, R.M., Russ. J. Gen. Chem., 1998, vol. 68, p. 1785.