| Reference Label | Details |
|---|---|
| Huber 1979 | K. P. Huber and G. Herzberg, "Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules", Van Nostrand Reinhold: New York 1979 |
| Miescher 1974 | E. Miescher, J. Mol. Spectrosc. 53, 302-310 (1974) The Fine Structure of the Spectrum of the Electronic NO Laser |