1. Melent’eva, E., Poluektov, N., and Kononenko, L., Zh. Anal. Chem., 1967, vol. 22, p. 187.
2. Yang, J., Ren, X., Zou, H., and Shi, R., Analyst, 1990, vol. 115, p. 1505.
3. Xu, Y.Y., Hemmila, I.A., and Lovgren, T.N.E., Analyst, 1992, vol. 117, p. 1067.
4. Xu, Y.Y. and Hemmila, I.A., Talanta, 1992, vol. 7, p. 759.
5. Peng, H., McNeil, J., Wu, Ch., Jiang, Y., and Huang, Sh., Langmuir, 2007, vol. 23, no. 4, p. 1591.