title: Comment on "ab initio electronic and optical properties of the N-V- center in diamond".
authors.affiliation: Department of Atomic Physics, Budapest University of Technology and Economics, Budafoki út 8., H-1111, Budapest, Hungary.
authors.forename: Adam
authors.initials: A
authors.lastname: Gali
authors.forename: Efthimios
authors.initials: E
authors.lastname: Kaxiras