| Reference Label | Details |
|---|---|
| est unc | estimated uncertainty |
| Coxon 1999 | J. A. Coxon and P. G. Hajigeorgiou, J. Mol. Spectrosc. 193, 306-318 (1999) Experimental Born–Oppenheimer Potential for the X 1Sigma+ Ground State of HeH+: Comparison with the Ab Initio Potential |