TY - CPAPER KW - Invited AU - Lucia Reining BT - XITH Int. Workshop of Computational Physics and Material Science, Trieste (Italy) DA - 01/16-18 PY - 2003 T2 - XITH Int. Workshop of Computational Physics and Material Science, Trieste (Italy) TI - Electron-hole excitations in the quasiparticle picture and in the density-functional framework ER -