An ellipsometric investigation of Ag/SiO2 nanocomposite thin filmsR. K. Roy, S. K. Mandal, D. Bhattacharyya and A. K. PalEur. Phys. J. B, 34 1 (2003) 25-31DOI: https://doi.org/10.1140/epjb/e2003-00192-5