Reference Label	Details
note unc	The quoted uncertainty appeared to correspond to one std dev. and was multiplied by 2 to come closer to the desired 95% confidence limit
Seiler 2001	R. Seiler, U. Hollenstein, G. M. Greetham, and F. Merkt, Chem. Phys. Letters, 346, 201-208 (2001) Rydberg-State-Resolved Zero-Kinetic-Energy Photoelectron Spectroscopy Erratum: Chem. Phys. Lett. 350, 189-189 (2001) [DOI: 10.1016/S0009-2614(01)01200-3]