Plasmon response in K, Na and Li clusters: systematics using the separable random-phase-approximation with pseudo-HamiltoniansW. Kleinig, V. O. Nesterenko, P.-G. Reinhard and Ll. SerraEur. Phys. J. D, 4 3 (1998) 343-352DOI: https://doi.org/10.1007/s100530050218