1: Greenwood,N.N., Earnshaw,A. Chemistry of the elements
2nd edition (1997) Edited by Greenwood,N.N., Earnshaw,A. pp. 1-1340, Butterworth-Heinemann. Oxford. Great Britain

2: CRC Handbook of Chemistry and Physics
75th edition (1994) Edited by Lide,D.R. , CRC Press Inc. Boca Raton, USA

3: The Merck Index
12th edition (1996) Edited by Budavari,S., Merck Research Laboratories, USA

4: Spaggiari.S., Kepp,O., Rello-Varona,S., Chaba,K., Adjemian,S., Pype,J., Galluzzi,L., Lemaire,M., Kroemer,G. Antiapoptotic activity of argon and xenon
Cell Cycle. (2013) 12 pp. 2636-2642

5: Live Chart of Nucleotides
Nuclear Data Service.