1. Alekin, O.A., Osnovy gidrokhimii (Foundations of Hydrochemistry), Leningrad: Gidrometeoizdat, 1970.
2. Molchanova, Ya.P., Zaika, E.A., Babkina, E.I., and Surnin, V.A., Gidrokhimicheskie pokazateli sostoyaniya okruzhayushchei sredy: spravochnye materialy (Hydrochemical Parameters of Environmental Conditions: References), Moscow: Sotsial’no-ekologicheskii Soyuz, 2000.
3. Moskvin, L.N., Bulatov, A.V., Nikolaeva, D.N., and Grigor’ev, G.L., Zhurn. anal. khim., 2002, vol. 57, no. 7, p. 709 [J. Anal. Chem. (Engl. Transl.), vol. 57, no. 7, p. 590].
4. Motomizu, S. and Li, Z., Talanta, 2005, vol. 66, no. 2, p. 332.
5. Estela, J.M. and Cerda, V., Talanta, 2005, vol. 66, no. 2, p. 307.