1. Ignatova, Yu.A., Eritenko, A.N., Revenko, A.G., and Tsvetyanskii, A.L., Analitika Kontrol’, 2011, vol. 15, no. 2, p. 126.
2. Darashkevich, V.R., Malyukov, B.A., and Turovskaya, G.M., Zh. Anal. Khim., 1979, vol. 34, no. 1, p. 138.
3. Kanrar, B., Sanyal, K., Misra, N.L., and Aggarwal, S.K., Spectrochim. Acta, Part B, 2014, vol. 101, p. 130.
4. Jonnard, P., Maury, H., and Andre, J.-M., X-Ray Spectrom., 2007, vol. 36, p. 72.
5. Nygard, K., Hamalainen, K., Manninen, S., Jalas, P., and Ruottinen, J.-P., X-Ray Spectrom., 2004, vol. 33, p. 354.