Surface plasmon resonance in nanocrystalline silver in a ZnO matrix R. K. Roy, S. Bandyopadhyaya and A. K. Pal Eur. Phys. J. B, 39 4 (2004) 491-498 Published online: 23 July 2004 DOI: 10.1140/epjb/e2004-00222-x