J. J. Kas, John J. Rehr, Lucia Reining. Cumulant expansion of the retarded one-electron Green function.
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2014, 90, pp.085112.
⟨10.1103/PhysRevB.90.085112⟩.
⟨hal-01113971⟩