Michael E. Wieser, Tyler B. Coplen: Atomic weights of the elements 2009 (IUPAC Technical Report). u: Pure and Applied Chemistry. 2010, str. 1, DOI:10.1351/PAC-REP-10-09-14
Yiming Zhang, Julian R. G. Evans, Shoufeng Yang: Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks. u: Journal of Chemical & Engineering Data. 56, 2011, str. 328–337, DOI:10.1021/je1011086