Fir and Raman Spectroscopy Study of Phonons in CdS-SiO2 Composites M.I. Vasilevskiy, A.G. Rolo, M.J.M. Gomes, O. V. Vikhrova and A. YU. Savinov 24th International Conference on The Physics of Semiconductors - 24th ICPS 1998", Section II-Tu-P10, Jerusalem, 2-7 Agosto de 1998, Israel.