Rossini, F.
and Wagman, D.
(1973),
Selected values of chemical thermodynamic properties ::Part 7 Tables for the Lanthanide (Rare Earth) Elements (Elements 62-76) in the standard order of arrangement, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.TN.270-7
(Accessed February 17, 2025)