1. Mellor, D. P., and Maley, L., Nature, 159, 370 (1947).
2. Bjerrum, J., "Metal Ammine Formation in Aqueous Solution" (P. Haase and Son, Copenhagen, 1941).
3. Carlson, G. A., McReynolds, J. P., and Verhoek, F. H., J. Amer. Chem. Soc, 67, 1334 (1945).
4. Bjerrum J., and Anderson, P., Kgl. Danske Vidensk. Sel. Mat.-Fys. Medd., 22, No. 7 (1945).
5. Pfeiffer, P., Thielert, H., and Glaser, H., J. Prakt. Chem., 152, 145 (1939).