IUPAC

Recent relevant publications:

• Atomic Weights of the Elements 1995
  Pure Appl. Chem. 68(12), 2339-2359, 1996.
• Names and Symbols of Transfermium Elements
  Pure Appl. Chem., 69(12), pp.2471-2473, 1997
• History of the recommended atomic-weight values from 1882 to 1997: A comparison of differences from current values to the estimated uncertainties of earlier values
  Pure Appl. Chem., 70(1), 237-257, 1998.
• Atomic Weights of the Elements 1997, Pure Appl. Chem., 71(8), 1593-1607, 1999.
• Atomic Weights of the Elements 1999, Pure Appl. Chem., 73(4), 667-683, 2001.
• Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003.
• Atomic Weights of the Elements 2005, Pure Appl. Chem. 78(11), 2051-2066, 2006 > see release

- link to FAQs > The Chemical Elements