title: Comment on "Ab initio analytical infrared intensities for periodic systems through a coupled perturbed Hartree-Fock/Kohn-Sham method" [J. Chem. Phys. 137, 204113 (2012)].
authors.affiliation: Dipartimento di Chimica, Università di Torino and NIS -Nanostructured Interfaces and Surfaces - Centre of Excellence, Via P. Giuria 7, 10125 Torino, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Maschio
authors.forename: Bernard
authors.initials: B
authors.lastname: Kirtman
authors.forename: Michel
authors.initials: M
authors.lastname: Rérat
authors.forename: Roberto
authors.initials: R
authors.lastname: Orlando
authors.forename: Roberto
authors.initials: R
authors.lastname: Dovesi