2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29694Some of the properties of the low-dimensional electronically correlated materials \cgo and \nvo are discussed. The emphasis lies on recent results obtained using Raman scattering and optical absorption spectroscopy as a function of temperature, magnetic field and hydrostatic pressure.Revtex format, 5 pages, 3 figures. Submitted to Ferroelectrics, Proceedings of the international conference on Low Energy Electrodynamics in Solids (LEES99), June 21-25 1999, Pécs, HungaryStrongly Correlated ElectronsMaterials Sciencetext