Oxford:Butterworth-Heinemann. 1997: 901. ISBN 0-7506-3365-4. Greenwood, N. N.; Earnshaw, A. Chemistry of the Elements 2nd. Oxford:Butterworth-Heinemann. 1997:
Greenwood, N. N.; Earnshaw, A. Chemistry of the Elements 2nd. Oxford:Butterworth-Heinemann. 1997. ISBN 0-7506-3365-4. Blachnik, R. Taschenbuch für Chemiker
Oxford:Butterworth-Heinemann. 1997. ISBN 0-7506-3365-4. Greenwood, N. N.; Earnshaw, A. Chemistry of the Elements 2nd. Oxford:Butterworth-Heinemann. 1997
无机化合物制备手册. 化学工业出版社, 2006. pp 444 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9