1. Romanovskaya, G.I., Zh. Anal. Khim., 1993, vol. 48, no. 2, p. 198.
2. Romanovskaya, G.I., Zh. Anal. Khim., 2009, vol. 64, no. 7, p. 775 [J. Anal. Chem. (Engl. Transl.), vol. 64, no. 7, p. 755].
3. Vasil’eva, I.A., Galanin, M.D., Krasnaya, Zh.A., Nikitina, A.N., and Chizhikova, Z.A., Opt. Spektrosk., 1992, vol. 73, no. 2, p. 301.
4. Vasil’eva, I.A., Galanin, M.D., Krasnaya, Zh.A., Nikitina, A.N., and Chizhikova, Z.A., Kratk. Soobshch. Fiz., 1995, nos. 1–2, p. 74.
5. Vasil’eva, I.A., Galanin, M.D., Krasnaya, Zh.A., Nikitina, A.N., Smirnova, Yu.V., and Chizhikova, Z.A., Kratk. Soobshch. Fiz., 1998, no. 6, p. 47.