1. The interpretation of XPS spectra: Insights into materials properties
2. On the prediction of core level binding energies in molecules, surfaces and solids
3. Extracting Chemical Information from XPS Spectra: A Perspective
4. DIRAC, a relativistic ab initio electronic structure program, Release DIRAC08 (2008), written by L. Visscher, H.J. Aa. Jensen, T. Saue, with new contributions from R. Bast, S. Dubillard, K.G. Dyall, U. Ekström, E. Eliav, T. Fleig, A.S.P. Gomes, T.U. Helgaker, J. Henriksson, M. Iliaš, Ch. R. Jacob, S. Knecht, P. Norman, J. Olsen, M. Pernpointner, K. Ruud, P. Sałek, J. Sikkema (see the URL at http://dirac.chem.sdu.dk).
5. Novel mechanisms for core level shifts in organic compounds