1. S. Hüfner , Photoelectron Spectroscopy: Principles and Applications, Springer Series in Solid-State Sciences , Springer-Verlag Berlin Heidelberg GmbH , 2003
2. P. Van der Heide , X-ray Photoelectron Spectroscopy. An Introduction to Principles and Practices , John Wiley & Sons, Inc. , Hoboken, New Jersey , 2012
3. K. Siegbahn , C.Nordling , A.Falhman , R.Nordberg , K.Hamrin , J.Hedman , G.Johansson , T.Bergmark , S. E.Karlsson , I.Lindgren and B.Lindberg , ESCA-Atomic, Molecular and Solid State Structure Studied by Means of Electron Spectroscopy , Almqvist and Wiksells Boktryckeri AB , Uppsala, Sweden , 1967
4. K. Siegbahn , C.Nordling , G.Johansson , J.Hedman , P. F.Hedén , K.Hamrin , U.Gelius , T.Bergmark , L. O.Werme , R.Manne and Y.Baer , ESCA-Applied to Free Molecules , North-Holland , Amsterdam , 1969
5. Extracting Chemical Information from XPS Spectra: A Perspective