1. Kalnes, T. and Sames, R., Environ. Prog., 1988, vol. 7, no. 3, p. 185.
2. Zanaveskin, L.N., Aver’yanov, V.A., and Treger, Yu.A., Usp. Khim., 1996, vol. 65, no. 7, p. 667.
3. Kartashov, L.M., Flid, M.R., Treger, Yu.A., and Dasaeva, G.S., Khim. Prom-st’ Segodnya, 2004, no. 7, p. 33.
4. Eur. Chem. News, 1990, vol. 54, no. 1417, p. 28.
5. The Chemical Engineer, 1989, November, p. 30.