| Reference Label | Details |
|---|---|
| est unc | estimated uncertainty |
| Chen 2001 | F. Chen and E. R. Davidson, J. Phys. Chem. A 105, 10915-10921 (2001) Electronic, Structural, and Hyperfine Interaction Investigations on Rydberg Molecules: NH4, OH3, and FH2 |
| Signorell 1997a | R. Signorell, H. Palm, and F. Merkt, J. Chem. Phys. 106, 6523-6533 (1997) Structure of the ammonium radical from a rotationally resolved photoelectron spectrum |