Reference Label	Details
est unc	estimated uncertainty
Richardson 1973	J. H. Richardson, L. M. Stephenson, and John I. Brauman, J. Chem. Phys. 59, 5068-5076 (1973) Photodetachment of Electrons from Large Molecular Systems: Cyclopentadienide and Methylcyclopentadienide Ions. An Upper Limit to the Electron Affinities of C5H5 and CH3C5H4