| Reference Label | Details |
|---|---|
| NIST Atomic Web | NIST Atomic Spectra Database, NIST Standard Reference Database #78, National Institute of Standards and Technology: Gaithersburg, MD 2002 Web: http://physics.nist.gov/cgi-bin/AtData/main_asd |
| 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 |
| Bromander 1967 | J. Bromander, B. Johansson, and K. Bockasten J. Opt. Soc. Amer. 57, 1158-1159 (1967) Spectra of O IV and O V |