1. Katskov, D.A.,Zh. Prikl. Spektrosk., 1983, vol. 38, p. 181.
2. L’vov, B.V.,Spectrochim. Acta, 1997, vol. 52, p. 1.
3. Styris, D.L. and Redfield, D.A.R.,Spectrochim. Acta. Rev., 1993, vol. 15, p. 71.
4. Sturgeon, R.,Fresenius’Z. Anal. Chem., 1986, vol. 324, p. 807.
5. Gil’mutdinov, A.Kh. and Zakharov, Yu.A.,Izv. Akad. Nauk SSSR, Ser. Fiz., 1989, vol. 53, p. 1821.