1. U. Hollenstein, R. Seiler, H. Schmutz, M. Andrist, M. Merkt: J. Chem. Phys. 115, 5461 (2001)
2. D.W. Turner, A.D. Baker, C. Baker, C.R. Brundle: Molecular Photoelectron Spectroscopy (Wiley, New York 1970)
3. Further molecular photoelectron spectra can be found in: K. Kimura, S. Katsumata, Y. Achiba, T. Yamazaki, S. Iwata: Handbook of He I Photoelectron Spectra of Fundamental Organic Molecules (Jpn. Sci. Soc. Press, Tokyo 1981)
4. Data Bank of Hen Photoelectron Spectra:
5. Pt.I Hydrocarbons (C,H), J. Electron Spectrosc. Relat. Phenom. 10, 149 (1980)