Arjan Berger, Lucia Reining, Francesco Sottile. Ab initio calculations of electronic excitations: Collapsing spectral sums.
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2010, 82, pp.041103(R).
⟨10.1103/PhysRevB.82.041103⟩.
⟨hal-00562657⟩