Wieser, Michael E.; Tyler B. Coplen (2010). „Atomic weights of the elements 2009 (IUPAC Technical Report)”. Pure and Applied Chemistry. 83 (2): 359—396. S2CID95898322. doi:10.1351/PAC-REP-10-09-14.
Wieser, Michael E.; Tyler B. Coplen (2010). „Atomic weights of the elements 2009 (IUPAC Technical Report)”. Pure and Applied Chemistry. 83 (2): 359—396. S2CID95898322. doi:10.1351/PAC-REP-10-09-14.