1. Fischer, W., Braune, G., Dietz, W., et al., Angew. Chem., 1954, vol. 66, no. 12, pp. 317–325.
2. Levin, V.I., Kvaziravnovesnye ekstraktsionnye protsessy. Ekstraktsiya. Teoriya, primenenie, apparatura: Sbornik statei (Quasi-Equilibrium Extraction Processes. Extraction. Theory, Application, Apparatus: Coll. of Papers), Zefirov, A.P. and Senyavin, M.M., Moscow: Goskhimizdat, 1962, vol. 1, pp. 143–162.
3. Kies, M.W. and Davis, P.L., J. Biol. Chem., 1951, vol. 189, pp. 637–650.
4. Kodina, G.E., Korpusov, G.V., and Filyanin, A.T., Radiokhimiya, 2002, vol. 44, no. 1, pp. 61–64.
5. Schwarzenbach, G. and Flaschka, H., Die komplexometrische Titration, Stuttgart: Ferdinand Enke, 1965.