Reference Label Details
Kimura 1981K. Kimura, S. Katsumata, Y. Achiba, T. Yamazaki, and S. Iwata, "Ionization Energies, Ab Initio Assignments, and Valence Electronic Structure for 200 Molecules", in "Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds", Japan Scientific Soc. Press: Tokyo 1981
est uncestimated uncertainty