1. ESCA Atomic, Molecular and Solid State Structure Studied by Means of Electron Spectroscopy;Siegbahn;Nova Acta Regiae Soc. Sci. Upsaliensis. Ser. IV,1967
2. ESCA - Applied to Free Molecules;Siegbahn,1969
3. Electron Spectroscopy: Theory, Techniques and Applications;Brundle,1979
4. X-ray Spectroscopy - An Introduction;Agarwal,1979
5. X-ray Spectra and Chemical Binding;Meisel,1989