Thorvaldsen08

A. J. Thorvaldsen, K. Ruud, K. Kristensen, P. Jørgensen, and S. Coriani, “A density matrix-based quasienergy formulation of the Kohn-Sham density functional response theory using perturbation- and time-dependent basis sets,” J. Chem. Phys., 129 (2008) 214108. DOI: 10.1063/1.2996351