title: Ab initio calculations of optical absorption spectra: solution of the Bethe-Salpeter equation within density matrix perturbation theory.
authors.affiliation: Department of Chemistry, University of California, Davis, Davis, California 95616, USA. drocca@ucdavis.edu
authors.forename: Dario
authors.initials: D
authors.lastname: Rocca
authors.forename: Deyu
authors.initials: D
authors.lastname: Lu
authors.forename: Giulia
authors.initials: G
authors.lastname: Galli