Reference Label	Details
est unc	estimated uncertainty
Tung 2012	W.-C. Tung, M. Pavanello, and L. Adamowicz, J. Chem. Phys. 136, 104309/1-8 (2012) Very Accurate Potential Energy Curve of the He2+ Ion
Cencek 2000	W. Cencek and J. Rychlewski, Chem. Phys. Lett. 320, 549-552 (2000) Benchmark Calculations for He2+ and LiH Molecules Using Explicitly Correlated Gaussian Functions