Optical properties of gold metal clusters: A time-dependent local-density-approximation investigation J. Lermé, B. Palpant, B. Prével, E. Cottancin, M. Pellarin, M. Treilleux, J. L. Vialle, A. Perez and M. Broyer Eur. Phys. J. D, 7 1 (1999) 137 Published online: 15 August 1999 DOI: 10.1007/s100530050358