Magnus Bukhave Johansen, Theo Juncker von Buchwald, Phillip Gustav Iuel Lunøe Dünweber, Lars Henrik Olsen, Andreas Erbs Hillers-Bendtsen, Frederik Ø. Kjeldal, Jeppe Olsen, Poul Jørgensen, Kurt V. Mikkelsen. "Cluster perturbation theory. XII. Parallel implementation of variational excitation energy series for the coupled cluster singles and doubles model." The Journal of Chemical Physics, 2025. doi:10.1063/5.0271032