1. Kruglova, M.A. and Yaroshenko, M.P., Zh. Prikl. Khim., 2007, vol. 80, no. 9, p. 1461.
2. Gavrilova, N.N., Zhilina, O.V., and Nazarov, V.V., Zh. Prikl. Khim., 2007, vol. 80, no. 9, p. 1468.
3. Reddy, B.M., Reddy, G.K., Rao, K.N., et al., J. Mater. Sci., 2009, vol. 44, p. 4874.
4. Du, Y., Du, M., Qiao, Y., et al., Kolloidn. Zh., 2007, vol. 69, no. 6, p. 7695.
5. Drobakha, G.S., Drobakha, E.A., and Solntsev, K.A., Neorgan. Mater., 2007, vol. 43, no. 11, p. 215.