Optical absorption spectra of Ag 11 isomers - First-principles theoretical spectroscopy with time-dependent density functional theoryJ. I. Martínez and E. M. FernándezEur. Phys. J. D, 52 1-3 (2009) 199-202DOI: https://doi.org/10.1140/epjd/e2008-00244-6