@article {2862,
	title = {Electronic Excitations: Density-Functional Versus Many-Body Green{\textquoteright}s-Function Approaches},
	journal = {Reviews of Modern Physics},
	volume = {74},
	year = {2002},
	pages = {601-659},
	author = {Onida, Giovanni and Reining, Lucia and Rubio, Angel}
}
