Reference Label	Details
est unc	estimated uncertainty
Rabalais 1972	J. W. Rabalais, T. Bergmark, L. O. Werme, L. Karlson, M. Hussain, and K. Siebahn, "The High-Resolution Electron Spectrum of Carbon Suboxide", in: Electron Spectroscopy, Proc. Int. Conf. 1971, Asilomar, CA, 7-10 Sept. 1971, D.A. Shirley, Ed., North-Holland Pub. Co.: Amsterdam 1972, 425-439