1. Gmelin’s Handbuch der Anorganische Chemie 8th Auflage ‘Quecksilber’. Teil B. Lfg. 1, 2, 3, 4. Verlag. Chemie. GMBH (1965–69).
2. H. L. Roberts, Adv. inorg. Chem. Radiochem., 11 (1968) p. 309.
3. C. G. S. Phillips and R. J. P. Williams, Inorganic Chemistry. (Oxford University Press, 1965) vol. 2.
4. L. G. Hepler and G. Olofsson, Chem. Revs. (1975) p. 585.
5. Chemical Society Special Publication 17. Stability Constants of Metal-Ion Complexes, London, 1964.