1. Pozharskii, A.F., Soldatenkov, A.T., and Katritzky, A.R., Heterocycles in Life and Society, Chichester J. Wiley & Sons, 1997.
2. Maruyama, T., Kuroki, N., and Konishi, K., Kogyo Kagaku Zasshi, 1965, vol. 68, p. 2428.
3. Illenzeer, E.V., Aleksandrov, A.A., and El’chaninov, M.M., Russ. J. Org. Chem., 2012, vol. 48, p. 968. doi 10.1134/S1070428012070135
4. Jacobson, P., Ber., 1886, vol. 19, p. 1067, 1811. doi 10.1002/cber.18860190237
5. El’chaninov, M.M., Doctoral (Chem.) Dissertation, Rostov-on-Don, 2006.