1. Sidorov, O.F. and Seleznev, A.N., Ross. Khim. Zh., 2006, vol. 50, no. 1, p. 16.
2. http://www.infomine.ru/files/catalog/185/file_185.pdf.
3. Vershchinina, E.P, Gil’ debrandt, E.M., and Selina, E.A., Zh. SFU, 2012, vol. 7, no. 5, p. 752.
4. Kostikov, V.I., Samoilov, V.M., Beilina, N.Yu., and Ostronov, B.G., Ross. Khim. Zh., 2004, vol. 48, no. 5, p. 65.
5. Utkin, Yu.A., Yanko, E.A., Soloveichik, E.Ya., and Strakhov, V.M., Koks Khim., 2012, no. 9, p. 17.