Laurea (Physics) - thesis on 'Diagnostics of Hot, Low Density Plasmas in Solar Physics' (in Italian only) - advisers: M. Landini (now at Univ. of Florence), M.T. Gomez and G. Severino (Capodimonte Obs., Naples). Ph. D. (Physics) - thesis on 'Helium in the Spectrum of the Sun and Solar-type Stars" (in Italian and English - PostScript format ), partly carried out at National Solar Observatory (Tucson, Arizona, USA) - supervisers: L. A. Smaldone (Univ. of Naples), M. S. Giampapa (NSO/NOAO) and H. P. Jones (NASA/GSFC, Lab. for Astron. and Solar Phys., SW Solar Station).

chromospheric and coronal activity;

XUV spectral diagnostics;

non-LTE radiative transfer and atmosphere modelling.