Reference Label	Details
Drake 1999	G. W. F. Drake, private communication (1999) Note: quoted by Andersen 1999 and by Feller 2016
Andersen 1999	T. Andersen, H. K. Haugen, and H. Hotop, J. Phys. Chem. Ref. Data 28, 1511-1533 (1999) Binding Energies in Atomic Negative Ions: III
Feller 2016	D. Feller, J. Chem. Phys. 144, 014105/1-24 (2016) Application of a Convergent, Composite Coupled Cluster Approach to Bound State, Adiabatic Electron Affinities in Atoms and Small Molecules