1. Buzykin, B.I., Mironova, E.V., Nabiullin, V.N., Azancheev, N.M., Avvakumova, L.V., Rizvanov, I.Kh., Gubaidullin, A.T., Litvinov, I.A., and Syakaev, V.V., Zh. Obshch. Khim., 2008, vol. 78, no. 3, p. 476.
2. Buzykin, B.I., Mironova, E.V., Nabiullin, V.N., Gubaidullin, A.T., and Litvinov, I.A., Zh. Obshch. Khim., 2006, vol. 76, no. 9, p. 1534.
3. Sainsbury, M., Rodd’s Chemisty of Carbon Compounds, Ansell, M.F., Ed., Amsterdam: Elsevier, 1986, vol. IV, part D, p. 32.
4. Polya, J.B., Comperehensive Heterocyclic Chemistry I, Katritzky, A.R. and Rees, Ch.W., Eds., 1984, vol. 5, part 4A, p. 733.
5. Garratt, P.J., Comperehensive Heterocyclic Chemistry II, Katritzky, A.R., Rees, Ch.W., and Scriven, E.F.V., Eds., 1996, vol. 4, p. 127.