1. Berestovitskaya, V.M., Zobacheva, M.M., and Vasil’eva, O.S., Izv. Ross. Gos. Pedagog. Univ. im. Gertsena, Ser. Estestv. i Tochnye Nauki, 2002, no. 2(4), p. 133.
2. Mashkovskii, M.D., Lekarstvennye sredstva (Drugs), Moscow: Novaya Volna, 2002, p.116.
3. Perekalin, V.V., Sopova, A.S., Zobacheva, M.M., Spunde, R.Ya., Kruzite, M.P., and Mikstais, U.Ya., USSR Inventor’s Certificate no. 238479, 1968.
4. Perekalin, V.V., Novikov, B.M., Zobacheva, M.M., Kiseleva, I.N., Grineva, V.S., Kovalev, G.V., Tyurenkov, I.N., and Polevoi, L.G., USSR Patent no. 797219, 1979; C. A., 1996, vol. 124, 278178 m.
5. Smirnova, A.A., Zobacheva, M.M., Perekalin, V.V., and Piterskaya, I.V., Zh. Org. Khim., 1968, vol. 4, no. 9, p. 1665.