2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17038We review the Cini-Sawatzky approach to the line shape analysis of Auger CVV transitions, in its basic and original formulation. Then, several extensions of the theory are reviewed, namely the inclusion spin-orbit coupling, dynamical/plasmon screening, overlap effects, off-site interactions, the treatment of disorder and the formulation for partially filled bands. We conclude by highlighting what we consider to be future directions in the field.15 pages, 7 figures, to appear in J. Electron Spectroscopy and Rel. PhenStrongly Correlated ElectronsMaterials Sciencetext