NIST Energy Levels and Wavelengths Bibliographic Reference # 16264
S-Matrix Calculations of Energy Levels of the Lithium Isoelectronic Sequence,
J. Sapirstein and K. T. Cheng,
Phys. Rev. A 83, 012504 (2011)
DOI:

Comment: Uncertainty has been estimated by A. Kramida (unpublished, 2011) based on comparisons along the isoelectronic sequence.
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