| Reference Label | Details |
|---|---|
| est unc | estimated uncertainty |
| Purder 1992 | J. Purder, S. Civi, C. E. Blom, and M. C. van Hemert, J. Mol. Spectrosc. 153, 701-709 (1992) Diode Laser Spectra and Potential Energy Curve for the Molecular Ion HeH+ |
| Coxon 1999 | J. A. Coxon and P. G. Hajigeorgiou, J. Mol. Spectrosc. 193, 306-318 (1999) Experimental BornOppenheimer Potential for the X 1Sigma+ Ground State of HeH+: Comparison with the Ab Initio Potential |