↑Robert C. Weast (Hrsg.): CRC Handbook of Chemistry and Physics. CRC (Chemical Rubber Publishing Company), Boca Raton 1990, ISBN 0-8493-0470-9, S. E-129 bis E-145. Wäärser uun g/mol an uun cgs-ianhaiden. Amreegent tu SI-wäärs.
↑ 7,07,1Yiming Zhang, Julian R. G. Evans, Shoufeng Yang: Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks. Uun: Journal of Chemical & Engineering Data. 56, 2011, S. 328–337; doi:10.1021/je1011086.
↑(ütjden faan) David R. Lide: CRC Handbook of Chemistry and Physics. 90. aplaag. (uun't näät: 2010), CRC Press/Taylor and Francis, Boca Raton, FL, Geophysics, Astronomy, and Acoustics, S. 14-49. bei 0 °C.