| Reference Label | Details |
|---|---|
| Moore 1970 | C. E. Moore, "Ionization Potentials and Ionization Limits Derived from Analyses of Optical Spectra", NSRDS-NBS 34, National Bureau of Standards: Washington, DC 1970 |
| est unc | estimated uncertainty |
| Edlen 1964 | B. Edlén, Handb. Phys. Encycl. Phys. 27, 80-220 (1964) Atomic Spectra Note: Springer: Berlin 1964 |
| Edlen 1969 | B. Edlén, Solar Phys. 9, 439-445 (1969) On the Identification of Ar X and Ar XIV in the Solar Corona and the Origin of the Unidentified Coronal Lines |