1. Sobotovich, E.V., Bondarenko, G.N., and Ol’khovik, Yu.A., Radiokhimiya v zone vliyaniya ChAES (Radiochemistry in the Zone Affected by the Chernobyl Nuclear Power Plant), Kyiv: Naukova Dumka, 1992.
2. Mizuno, T. and Kubo, H., Sci. Rep., 2013, vol. 3, pp. 1–4.
3. Plyushchev, V.E. and Stepin, B.D., Analiticheskaya khimiya rubidiya i tseziya (Analytical Chemistry of Rubidium and Cesium), Moscow: Nauka, 1975.
4. Poluektov, N.S., Mishchenko, V.T., Kononenko, L.I., and Bel’tyukova, S.V., Analiticheskaya khimiya strontsiya (Analytical Chemistry of Strontium), Moscow: Nauka, 1978.
5. Lur’e, Yu.Yu., Spravochnik po analiticheskoi khimii (Handbook of Analytical Chemistry), Moscow: Khimiya, 1971.