Optical extinction spectroscopy of single silver nanoparticles P. Billaud, J.-R. Huntzinger, E. Cottancin, J. Lermé, M. Pellarin, L. Arnaud, M. Broyer, N. Del Fatti and F. Vallée Eur. Phys. J. D, 43 1-3 (2007) 271-274 Published online: 24 May 2007 DOI: 10.1140/epjd/e2007-00112-y