*Kirby, H. W. and Salutsky, Murrell L. (1964) The Radiochemistry of Radium, Subcommittee on Radiochemistry, National Academy of Sciences*"Gmelins Handbuch der anorganischen Chemie (8.
==References====Bibliography==*Kirby, H. W. and Salutsky, Murrell L. (1964) The Radiochemistry of Radium, Subcommittee on Radiochemistry, National Academy of Sciences==Sources==*"Gmelins Handbuch der anorganischen Chemie (8.