Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theoryM. W. Haverkort, G. Sangiovanni, P. Hansmann, A. Toschi, Y. Lu and S. MackeEPL, 108 5 (2014) 57004DOI: https://doi.org/10.1209/0295-5075/108/57004