Michael E. Wieser, Norman Holden, Tyler B. Coplen, John K. Böhlke, Michael Berglund, Willi A. Brand, Paul De Bièvre, Manfred Gröning, Robert D. Loss, Juris Meija, Takafumi Hirata, Thomas Prohaska, Ronny Schoenberg, Glenda O’Connor, Thomas Walczyk, Shige Yoneda, Xiang‑Kun Zhu.,Atomic weights of the elements 2011 (IUPAC Technical Report)[1], en, Pure and Applied Chemistry, 2013,85 том, 1047-1078 бет, 10.1351/PAC-REP-13-03-02