1. Kas’yan, L.I., Zlenko, O.T., Mamchur, V.I., Kas’yan, A.O., and Tarabara, I.M., Farm. Zh., 2002, p. 59.
2. Krieger, H., Arzn.-Forsch., 1968, vol. 18, p. 129, vol. 324, p. 487.
3. Yatsynich, E.A., Petrov, D.V., Dokichev, V.A., and Tomilov, Yu.V., Zh. Org. Khim., 2005, vol. 41, p. 1187.
4. Gorpinchenko, V.A., Yatsynich, E.A., Petrov, D.V., Karachurina, L.T., Khisamutdinova, R.Yu., Baschenko, N.Zh., Dokichev, V.A., Tomilov, Yu.V., Yunusov, M.S., and Nefedov, O.M., Khim.-Farm. Zh., 2005, p. 9.
5. Esanu, A., BE Patent 902231, 1985; Chem. Abstr., 1986, vol. 104, 110121p.